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)
300 : Social sciences, sociology & anthropology
| 310 : Statistics
| 320 : Political science
| 330 : Economics
| 340 : Law
| 350 : Public administration & military science
| 360 : Social problems & social services
| 370 : Education
| 380 : Commerce, communications & transportation
| 390 : Customs, etiquette & folklore
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| 310 : Collections of general statistics | 311 : [Unassigned] | 312 : [Unassigned] | 313 : [Unassigned] | 314 : General statistics of Europe | 315 : General statistics of Asia | 316 : General statistics of Africa | 317 : General statistics of North America | 318 : General statistics of South America | 319 : General statistics of other areas |