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UNDERSTANDING CALL NUMBERS


What are Call Numbers?

Library of Congress Classification (LC)

Each book in the library has a unique call number. A call number is like an address. It tells us where the book is located in the library. Call numbers can be found:

book spine and online catalog

 

Reading Call Numbers

lines of a call number

 

Putting Call Numbers in Shelf Order

To understand how call numbers are put in order in Library of Congress Classification, look at each section of the call number.


shelf order of call numbers

 

What Does the Call Number Mean?

The Library of Congress Classification arranges materials by subjects

  • The first sections of the call number represent the subject of the book.
  • The letter-and-decimal section of the call number often represents the author's last name.
  • The last section of a call number is often the date of publication.

meaning of call number

 

Why Is This Important to Know?

Books are classified by subject. You will often find similar books on the same shelf, or nearby. For example, within the same call number LB2395, there are other guides for college study.

study guides in LB2395

Note: Since Library of Congress Classification arranges materials by subjects, knowing the letter(s) for your subject area gives you a place to start browsing the shelves.

 

Last Update: June 08, CR

Modified with permission from the Honolulu Community College Library

http://honolulu.hawaii.edu/legacylib/callno.html

 
 

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Last Updated 09/04/07