Reference works
This material is located at the end of the general collection shelf and contains:

o    General or specialized encyclopedias

o    Dictionaries

o    Geographic and historical atlas

o    Manuals

o    Gudes

o    Almanac , etc.

 

Policy


Due the material in the reference area is used constantly, it is part of a whole in the case of encyclopedias, its cost is high, etc. The Library reserves the right to allow internal borrowing only and may not be photocopied. To access the files for this material, you must use the online catalog and it is differentiated from the general collection by having a letter C at the top of the classification and on the label on the spine of the book.


General Collection 
This collection is located in the right wing of the Library, and is available for external loan.


Policy 
External loan is restricted for books on reserve as well as for books that are unique except for night and weekend lending.


Special collections
This is a collection made up of reference works and a general collection specialized in the areas of Biology, History and Statistics.

·         Collections INEGI.

·         Collections Gonzalez Romero.

·         Collections Cifuentes Lemus.

Policy
In the case of the Gonzalez Romero and Cifuentes Lemus funds, only internal loan. For the INEGI area, we have both internal and external loans.