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The Dewey Decimal System

and how to use it


The Dewey Decimal System organizes books into 10 topic areas, which are then broken into smaller and smaller topics.  Each topic is assigned a number, known as a "call number".   For example, books on animals usually start with the call number of 599.  For specific topics like lions or tigers the call number would start with the animals call number of 599 followed by a decimal number for the topic of Lions.  So the call number would look like this 599.74.

Here is a quick look at the 10 topic areas of the Dewey Decimal System

 

000-099
General Knowledge
     000     Computers, Loch Ness, Bigfoot, UFOs, Aliens
     020     Libraries
     030     Encyclopedias & World Record Books
     060     Museums
     070     Newspapers
100-199
Psychology and Philosophy
     130     Ghosts, Witches & the Supernatural
     150     Optical Illusions, Feelings
     170     Emotions, Values, Animal Rights 
200-299
Religions and Mythology
     220     Bible Stories
     290     Mythology, World Religions 
300-399
Social Sciences and Folklore
     300      Social Issues - immigration, racism, World Cultures   
     310      Almanacs
     320      Government
     330      Money, Working
     340      Court System, Famous Trials
     350      Armed Forces – Army, Navy, Air Force, etc.
     360      Drugs, Environmental Issues, Titanic, Police, Firefighters
     370      Schools
     380      Transportation,
     390      Holidays, Folktales, Fairy Tales 
400-499
Languages
     410      Sign Language
     420      Dictionaries, Grammar
     430      German Language
     440      French Language
     450      Italian Language
     460      Spanish Language
     490      Hieroglyphics, Japanese Language 
500-599
Math and Science
     500      Science Experiments, Science Sets,
     510      Mathematics
     520      Stars, planets, astronomy, space
     530      Physical Science - force & motion, electricity, magnetism, light
     540       Chemistry, Atoms & Molecules, Rocks and Minerals
     550       Volcanoes, Earthquakes, Weather, Hurricanes, Tornadoes
     560       Dinosaurs, Prehistoric Animals, Fossils
     570       Forests, Rain Forests, Deserts, Mountains, Oceans, Evolution
     580       Plants, Flowers & Trees
     590       Animals & Insects
                  591
                  592            Worms, Invertebrates
                  593            Corals, Sea Invertebrates
                  594            Seashells, Snails, Octopus
                  595            Insects, Spiders 
                  596     
                  597            Fish, Frogs, Toads, Reptiles, Amphibians, Snakes
                  598            Birds 
                  599            Mammals of the Land and Ocean, Whales
600-699
Medicine and Technology
    600       Inventions  
    610       Human body, Health
    620       Rockets, Trains, Cars, Trucks
    630       Farming, Farm Animals, Cats, Dogs, Pets, Horses
    640       Cookbooks, Sewing
    650       Secret Codes
    660       How Food is made
    670       Paper Making
    680       Woodworking
    690       Building 
700-799
Arts & Recreation
    710       Art Appreciation, History of Art
    720       Houses, Buildings
    730       Origami, Paper Crafts
    740       Drawing, Crafts,
    750       Painting
    760       Printing
    770       Photography
    780       Music
    790       Sports, Games, Camping, Hiking, Fishing, Hunting 
800-899
Literature
    810       Poetry, Plays, Jokes & Riddles
    820       Shakespeare
    860       Poetry in Spanish
    890       Japanese Poetry, Haiku
900-999
Geography and History
    910       Explorers, Atlases
    920       Flags, People (Biography)
    930       Archeology, Ancient Civilizations
    940       Knights, Castles, World War I & II, European Countries
    950       Asian & Middle Eastern Countries
    960       African Countries
    970       North & Central American Countries, Native American Tribes,
                 American History, States
    980       South American Countries
    990       Pacific Islands, Australia, Hawaii, Arctic, Antarctica

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