Classification
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390 - Customs, etiquette & folklore
2
400 - Language
1
410 - Linguistics
3
420 - English & Old English
1
500 - Natural sciences & mathematics
9
509 - Historical, geographic & persons treatment
1
510 - Mathematics
6
511 - General principles of mathematics
2
515 - Analysis
1
518 - Numerical analysis
3
519 - Probabilities & applied mathematics
33
520 - Astronomy & allied sciences
25
530 - Physics
3
550 - Earth sciences
4
551 - Geology, hydrology & meteorology
6
570 - Life sciences; biology
1
576 - Genetics & evolution
3
577 - Ecology
4
590 - Animals (Zoology)
1
591 - Specific topics in natural history
1
600 - Technology
6
610 - Medicine & health
13
613 - Personal health & safety
2
614 - Incidence & prevention of disease
1
616 - Diseases
2
620 - Engineering & allied operations
10
621 - Applied physics
7
623 - Military & nautical engineering
1
628 - Sanitary & municipal engineering
2
629 - Other branches of engineering
1
630 - Agriculture & related technologies
7
650 - Management & auxiliary services
2
660 - Chemical engineering
3
670 - Manufacturing
1
680 - Manufacture for specific uses
2
700 - The arts; fine & decorative arts
8
709 - Historical, geographic & persons treatment
1
710 - Civic & landscape art
2
720 - Architecture
11
745 - Decorative arts
1
751 - Techniques, equipment, materials & forms
1
770 - Photography, photographs & computer art
1
780 - Music
5
790 - Recreational & performing arts
1
791 - Public performances
4
792 - Stage presentations
1
800 - Literature & rhetoric
10
809 - History, description & criticism
4
820 - English & Old English literatures
147
900 - History & geography
43
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