Understanding Call Numbers
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Each book in the library has a unique call number. Call numbers are like addresses; they tell you where each book “lives” on the shelf.

Like most academic libraries, Red Deer College Library uses Library of Congress call numbers, which use a combination of letters and numbers to arrange materials by subject.

The call number can be broken down into separate segments that indicate specific information about the book.

For example, the call number for The Moral Advantage: How to Succeed in Business by Doing the Right Thing is HF 5387 D366 2004:

HF broad subject area
5387 specific subject area
D366 author
2004 publication date

How to Read a Call Number

Call numbers are read line by line:

Start with the top line, HF; items are arranged alphabetically by subject (HF Social Sciences. Commerce). Single letters precede double letters.
(A, B, BF, C, D ... H, HF …)

Then read the second line, 5387; items are ordered using whole numbers.
(1, 2, 3, 45, 500, 501, 5000, 5387… )

Then read the third line, D366; items are ordered alphabetically. Items starting with the same letter are then arranged by decimal number. For D366 imagine D3.66 which would come before D4.

The fourth line, 2004, is the year of publication.

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