The Dewey Decimal System

The Dewey Decimal System assigns numbers to all non-fiction (i.e. information books) based on topic. This ensures that all books about the same topic are shelved together. All school and public libraries (worldwide) use dewey. The system has been in place for over 130 years (with frequent updates).

000s Computer science, information & general works
005 Computers

100s Philosophy & Psychology

158 Chicken Soup

200s Religion

220 Bible

300s Social sciences

364 Crime

400s Language

440 French

500s Science

540 Chemistry

600s Technology

690 Construction

700s Arts & recreation

780 Music

790 Sports

800s Literature

822 Shakespeare

900s History & geography

971 Canadian History