Classification
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520 - Astronomy & allied sciences
1
526 - Mathematical geography
1
530 - Physics
2
541 - Physical chemistry
1
550 - Earth sciences
9
551 - Geology, hydrology & meteorology
22
570 - Life sciences; biology
2
571 - Physiology & related subjects
2
577 - Ecology
78
579 - Microorganisms, fungi & algae
1
591 - Specific topics in natural history
3
600 - Technology
1
610 - Medicine & health
4
612 - Human physiology
1
613 - Personal health & safety
11
614 - Incidence & prevention of disease
5
616 - Diseases
1
620 - Engineering & allied operations
2
621 - Applied physics
24
624 - Civil engineering
24
627 - Hydraulic engineering
1
628 - Sanitary & municipal engineering
15
629 - Other branches of engineering
28
630 - Agriculture & related technologies
15
631 - Techniques, equipment & materials
4
634 - Orchards, fruits & forestry
4
636 - Animal husbandry
1
641 - Food & drink
1
658 - General management
21
660 - Chemical engineering
7
670 - Manufacturing
4
690 - Buildings
26
693 - Specific materials & purposes
1
696 - Utilities
12
700 - The arts; fine & decorative arts
3
709 - Historical, geographic & persons treatment
1
710 - Civic & landscape art
19
711 - Area planning
4
720 - Architecture
35
791 - Public performances
1
809 - History, description & criticism
10
900 - History & geography
4
909 - World history
1
910 - Geography & travel
71
930 - History of ancient world to ca. 499
2
940 - History of Europe
2
941 - British Isles
1
944 - France & Monaco
1
951 - China & adjacent areas
1
960 - History of Africa
1
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