Library classification system

The Library's book collection is shelved according to the Dewey Decimal Classification System. Other classification systems are used for the collections of fiction and periodicals. 

Dewey Decimal Classification, the Library's shelving system

The Library’s main book collection is sorted and shelved according to the Dewey Decimal Classification System, DDC. The system was created by the American librarian Melvil Dewey (1851–1931). According to DDC, books are grouped by subject with a numerical code for each subject area.

This is what it looks like when you have found a book in the library search service:

Information in UniSearch about a book's availability


The Book Collection is the main part of the library's books which is placed on open shelves, where you pick up the book you want yourself. In the library search service, the Call No shows you which shelf/section to go to. Within each call number section, books are sorted alphabetically by author’s last name or the first word in the book title, which is shown after the Call Number.

Classes of the Dewey Decimal System
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The Dewey Decimal Classification System is structured around ten main classes, each of them described with a numerical code of three digits, 000–900:

000 General works
004–006 Computer science 
100 Philosophy & psychology
200 Religion
300 Social sciences
370 Education
400 Language
500 Science & mathematics
600 Technology
610 Medicine & health
700 Arts & sports
800 Literature
900 History & geography

See the detailed list (in Swedish and English) of all DDC codes used by Linköping University Library:

Hyllsigneringsschema för böcker (PDF)

Other collections
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The Library's other collections, e.g. fiction and periodicals, are shelved according to other systems than DDC.  

SAB collection & Fiction

Older books are shelved according to the SAB Classification System and are found in the SAB collection, kept in closed stacks. If you want to borrow a book from the SAB collection, place a reservation in the library search service to have it sent to the branch library of your choice.

Fiction is also shelved according to the SAB Classification System. For exampel: He - fiction in English.


Printed periodicals are sorted alphabetically according journal title. 

School books and teaching material

The collections with school text books at Valla Library and Campus Norrköping Library are shelved according to school subject and educational stage.

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