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Have you ever wondered how library books are assigned their places
on the shelves? Did you know that the call number -- the number
placed on the spine of the book -- is a code which provides valuable
information about the book? This page will provide an introduction
to understanding and using library call numbers.
What
Are Call Numbers For?
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 appear
Note that the same call number can be written from top-to-bottom,
or left-to-right.
The Nimitz Library, like many academic libraries in the U.S.,
uses Library of Congress Classification for call numbers.
This system uses a combination of letters and numbers to arrange
materials by subjects.
Reading
Call Numbers
Putting
Call Numbers in Shelf Order
To understand how call numbers are put in order
in Library of Congress Classification, again look at each section
of the call number.
What
Does the Call Number Mean?
Remember that 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. And, as you probably
recall, the last section of a call number is often the date of
publication.
For example:
Why
Is This Important To Know?
Because books are classified by subject, you can often find several
helpful books on the same shelf, or nearby. For example, within
the same call number LB2395, there are other guides for college
study.

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.
For more information about call numbers and finding library materials,
ask at the Reference Desk.
"Understanding Call
Numbers" courtesy of
Seattle Central Community College Library.
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Last updated: 29 August 2002 |