1. What is it? How does it work?

2. System to order non-fiction books
Uses numbers from 0 to 999
Each topic is assigned a number

3. Generalities
Encyclopedia & Dictionaries
Almanac & World Records
Computers & Internet

4. 100-199 Philosophy & Psychology
Supernatural
Astrology
Emotions &Feelings

5. Religion
All religions
Myths

6. Social Sciences
Government & Politics
Environment
Social services
Fairy Tales & Folktales

7. 400-499 Languages Books in Foreign languages Foreign Dictionaries
Sign Languages

8. 500-599 Sciences Mathematics Planets & Stars Geology & Weather
Wild Animals

9. 600-699 Technology Human body & Health Space technology Pets
Inventions

10. Arts & Recreation
Sports
Music
Jokes
Crafts
Drawing

11. Literature
Writing
Poetry
Plays

12. Geography & History
Countries
States
Native Americans
Ancient Worlds

13. 92 Biography
Biography gets a special number and place!

14. What kind of book do you want to find?