First Summary (The Ten Main Classes) | |||||||||||||||||||||
| 000 : Computers, information, & general works | |||||||||||||||||||||
| 100 : Philosophy & psychology | |||||||||||||||||||||
| 200 : Religion | |||||||||||||||||||||
| 300 : Social sciences | |||||||||||||||||||||
| 400 : Language | |||||||||||||||||||||
| 500 : Science | |||||||||||||||||||||
| 600 : Technology | |||||||||||||||||||||
| 700 : Arts & recreation | |||||||||||||||||||||
| 800 : Literature | |||||||||||||||||||||
| 900 : History & geography | |||||||||||||||||||||
Second Summary (The Hundred Divisions)
900 : History
| 910 : Geography & travel
| 920 : Biography & genealogy
| 930 : History of ancient world (to ca. 499)
| 940 : History of Europe
| 950 : History of Asia
| 960 : History of Africa
| 970 : History of North America
| 980 : History of South America
| 990 : History of other areas |
| 900 : History & geography | 901 : Philosophy & theory | 902 : Miscellany | 903 : Dictionaries & encyclopedias | 904 : Collected accounts of events | 905 : Serial publications | 906 : Organizations & management | 907 : Education, research & related topics | 908 : Kinds of persons treatment | 909 : World history |