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Library of Congress Classification System

How to find books at Wake Tech Libraries
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How Do I Read Library of Congress Call Numbers?

A call number is like an address; it tells you where the book is located on the shelf.

The classification system is designed to group library materials of similar subjects together and is used by many universities and colleges.

Here is a sample of items in call number order:


Tips for Finding Books on the Shelf

Call number 'LB 2395 .C65 1991' on the spine of a book and in the online catalogRead call numbers line by line

LB
Read the first line in alphabetical order:
A, B, BF, C, D... L, LA, LB, LC, M, ML...

2395
Read the second line as a whole number:
1, 2, 3, 45, 100, 101, 1000, 2000, 2430...

.C65
The third line is a combination of a letter and numbers. Read the letter alphabetically. Read the number as a decimal, eg:
.C65 = .65 .C724 = .724

Some call numbers have more than one combination letter-number line.

1991
The last line is the year the book was published. Read in chronological order:
1985, 1991, 1992...

Here is a shelf of books with the call number order explained.


*Information from the University System of Georgia

Click here for a detailed list of Library of Congress classifications. (opens in new window)

This search box will search all six Wake Tech Community College libraries.  You can also request books from community colleges across the state.

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If the library does not have a book or article that you need, you can order items through interlibrary loan (ILL).

What is Interlibrary Loan? Interlibrary loan (ILL) is a service that allows our library patrons to borrow materials from other libraries. Materials are mailed to WTCC Library where you can then view or check out the materials.

To find books that are held by other libraries all over the world, you can search WorldCat.org (opens in new window).