In the Central library, book cataloging is based on Dewey Decimal System. In Dewey cataloging, all different sciences are divided into ten parts or categories. Codes of 000-999 are given to these ten categories. Based on the subject, these codes are given to books as indicators:
 
Generalities 000
Psychology and philosophy 100
Religion 200
Social sciences 300
Language 400
Natural sciences and mathematics 500
Applied sciences 600
Arts 700
Literature [literary works] 800
History, geography and related sciences
 
The software system of central library is PAND. Cataloging and circulating books, and doing search services are done through computer. Theses summery, references and table of contents have already been presented on the library website.
 
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