Library Media Center

Dewey Decimal System

The Dewey System divides all knowledge into ten groups. Thus, books dealing with the same subject are shelved together. Each book has its call number on the spine, consisting usually of a number and three capital letters. Some books are divided into other categories, such as Reference (R), Fiction (F), Story Collection (SC), and Oversize books (OS). Look at the examples below:

271.78
LAS
La Salle, John Baptist de. The duties of a Christian to God.
R
809.3
NOV
v18
Novels for Students.  
OS
974.886
JAC
Jacques, Charles J. Kennywood: the roller coaster capital of the world.
F
ROW
Rowling, J. K. Harry Potter and the Order of the Phoenix.
SC
CEN
A century of British mystery and suspense.  
VR
813.5
HEM
Ernest Hemingway: wrestling with life.  
576.84
BEN
Benton, Michael J. When life nearly died: the greatest mass extinction of all time.

top of page