The Dewey Decimal System
000s Generalities: computers, big foot, world records...
100s Philosophy: ghosts, witches, supernatural, feelings, values
200s Religion: world religions, mythology
300s Social Sciences: world cultures, government, armed forces, holidays, folktales
400s Languages: sign language, dictionaries, foreign languages
500s Science & Math: science experiments, astronomy, physical science, dinosaurs, plants, animals
600s People using science & technology:
Inventions, human body, rockets, cars, farming, cookbooks, how things are made
700s Arts & Recreation: art, origami, drawing, painting, music, sports, games, magic
800s Literature: poetry, plays, jokes
900s Geography & History: Explorers, atlases, biography, knights, World Wars, Countries
100s Philosophy: ghosts, witches, supernatural, feelings, values
200s Religion: world religions, mythology
300s Social Sciences: world cultures, government, armed forces, holidays, folktales
400s Languages: sign language, dictionaries, foreign languages
500s Science & Math: science experiments, astronomy, physical science, dinosaurs, plants, animals
600s People using science & technology:
Inventions, human body, rockets, cars, farming, cookbooks, how things are made
700s Arts & Recreation: art, origami, drawing, painting, music, sports, games, magic
800s Literature: poetry, plays, jokes
900s Geography & History: Explorers, atlases, biography, knights, World Wars, Countries