Classification
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500 - Natural sciences & mathematics
175
507 - Education, research & related topics
3
519 - Probabilities & applied mathematics
2
520 - Astronomy & allied sciences
5
530 - Physics
78
540 - Chemistry & allied sciences
29
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
51
570 - Life sciences; biology
1
576 - Genetics & evolution
60
580 - Plants (Botany)
29
581 - Specific topics in natural history
29
600 - Technology
465
610 - Medicine & health
680
612 - Human physiology
11
615 - Pharmacology & therapeutics
5
616 - Diseases
2
620 - Engineering & allied operations
120
630 - Agriculture & related technologies
50
650 - Management & auxiliary services
1
657 - Accounting
11
658 - General management
44
660 - Chemical engineering
1
700 - The arts; fine & decorative arts
531
720 - Architecture
44
745 - Decorative arts
5
770 - Photography, photographs & computer art
14
780 - Music
69
791 - Public performances
5
796 - Athletic & outdoor sports & games
1
800 - Literature & rhetoric
91
838 - German miscellaneous writings
1
900 - History & geography
520
920 - Biography, genealogy & insignia
3
943 - Central Europe; Germany
2
972 - Middle America; Mexico
1