10 Main Categories
|000 - 099||General Works
Computers, general encyclopedias, newspapers.
|100 - 199||Philosophy & Psychology
Great ideas, thinking, dreams, ethics.
|200 - 299||Religion
Different religions & beliefs.
|300 - 399||Social Sciences
Communities, government, careers, natural resources, schools, transportation, folklore.
|400 - 499||Language
Dictionaries, grammar, spelling, with different numbers for different languages.
|500 - 599||Pure Sciences
Mathematics, solar system, electricity, rocks, dinosaurs, plants, animals, experiments.
|600 - 699||Technology & Applied Sciences
Inventions, human body, farming, cooking, manufacturing different products.
|700 - 799||The Arts
Designing buildings, sculpture, drawing, painting, handicrafts, music, theatre, sports.
|800 - 899||Literature
Poetry, plays, humour, with different numbers for different languages.
|900 - 999||Geography & History
Biographies, flags, ancient history, countries, with different numbers for different continents & countries