Find out the main classes and subclasses of the Library of Congress Classification taxonomy
The Dewey Decimal System
In the Dewey Decimal system, the call number is made up of three parts: 306.89 Pow 199
Book: Family breakup
Author: Jillian Powell
Call number: 306.89 Pow 1999
1. The call number will look like this on the book:
2. Read the call number line by line.
Dewey number: 306.89
300's are for books about social science topics. 306.89 is on the subject of divorce.
Cutter number: Pow
The cutter number for a book usually consists of the first few letters of the author's last name.
Date of publication: 1999
The last number is the date the work was published.
The decimal system treats numbers as decimals rather than whole numbers (.12 comes before .2).
"Nothing" always comes before something (.1 comes before .11). Imagine there is a zero after the final number.