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)
500 : Science
| 510 : Mathematics
| 520 : Astronomy
| 530 : Physics
| 540 : Chemistry
| 550 : Earth sciences & geology
| 560 : Fossils & prehistoric life
| 570 : Life sciences; biology
| 580 : Plants (Botany)
| 590 : Animals (Zoology)
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| 550 : Earth sciences | 551 : Geology, hydrology & meteorology | 552 : Petrology | 553 : Economic geology | 554 : Earth sciences of Europe | 555 : Earth sciences of Asia | 556 : Earth sciences of Africa | 557 : Earth sciences of North America | 558 : Earth sciences of South America | 559 : Earth sciences of other areas |