Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Political Science

Use this guide as a starting place when searching for resources on Political Science and related topics.

Call Numbers Explained

Book cover

Anatomy of a Library of Congress Call Number

The books in our library are shelved by call number using Library of Congress Classification.

Book title: Shakespeare: for all time
Author: Stanley Wells
Call Number: PR2894 .W43 2003

The first two lines describe the subject of the book.
PR = English Literature
2894 = English renaissance (1500-1640)

The third line usually represents the author's last name.
= Wells

The last line represents the date of publication.

Using the Call Number to Find the Book

PR Read the first line in alphabetical order:
A, B, BF, L, LA, LB, LC, M, P, PR...
2894 Read the second line as a whole number:
1, 2, 3, 45, 100, 101, 1145, 2587, 2894...
.W43 The third line is the trickiest part of the call number! 
Read the letter alphabetically and the number as a decimal
.W301 will come before .W43 (read them as .W301 and .W430)
2003 The last line is the year the book was published. Read in chronological order:
1985, 1991, 2003, 2009...

Find Articles Faster: Boolean AND, OR, NOT

Boolean Operator Examples Results
Boolean AND


AND combines different terms when both must be present. Use AND to narrow a search.
Boolean OR


OR combines terms when at least one must be present. Use OR to broaden a search.
Boolean NOT


NOT eliminates irrelevant terms from a search. Use NOT when
you want to exclude all records that contain a certain term.