000-099
General Works
Encyclopedias, 
News & Information

100-199
Philosophy
Logic

200-299
Religion
Mythology & 
Religion

300-399.htm
Social Sciences  
 Careers, Customs, Government

400-499
Languages
 Foreign, Dictionaries, Thesaurus

500-599
Natural Science  
Biology, Astronomy, Math, Earth

600-699
Applied Science
& Technology
Engineering, Medicine

700-799
The Arts
Music, Sports, Architecture
 

800-899
Literature
Poetry, Writing, Drama

Biography
Bs & 920's
 Famous People

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