You can freely browse the shelves (which you go to yourself), although some documents (such as older journals, gray literature or any audiovisual resources) have to be requested at the Library’s main desk.You can move freely with books within the library but please do not exceed the security antennas placed at the entrance. You should leave books or journals on the desks once you finish using them.

The items on the shelves are arranged by subject according to the UDC - Universal Decimal Classification. This classification divides knowledge into 10 main classes hierarchically subdivided into more specific classes:

0 Science and Knowledge. Organization. Computer Science. Information.
1  Philosophy. Psychology.
2 Religion. Theology.
3 Social Sciences
4 [Reserved for future  development]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
5 Mathematics. Natural Sciences.
6 Applied Sciences. Medicine. Technology.
7 The Arts, Recreation, Entertainment, Sport.
8 Language. Linguistics. Literature.
9 Geography. Biography. History.

Numbers and common punctuation marks are used in the UDC in order to be universal and independent of the language of the document.

The classification is based on the decimal system , ie , the classes are designed as expressions of a decimal ( 0.11111 ) fraction but with zero and omitted comma and classes punctuated every three digits for easy reading ( 111.11 ).

The UDC is structured in such a way that new developments and new fields of knowledge can be readily incorporated (the creation of the class 111.111 by adding 1 to the class of subclass 111.11 does not alter the fact that the latter lies after the class 111.10 and before class 111.12).

A practical example is the class of 631.589, which corresponds to the description of "Culture by artificial methods", which is not very enlightening if you do not consider their hierarchy and their descriptions:
                 Applied Sciences ...Technology.
63              Agriculture. Forestry, Etc.
631            Agriculture in general.
631.5       Work and agricultural methods.
631.58    Systems culture.
631 589 Culture by artificial methods.

The periodicals are arranged alphabetically by titles.

Before heading to the shelves, please check the catalogue to easily find the documents.
Users should make good use of the facilities and resources available, respecting the Regulations (turn off cell phones, do not eat, the maximum reserve of silence, do not cause damage to documents, such as scratching , watering, etc.).

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