Classification
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384 - Communications; telecommunication
14
388 - Transportation; ground transportation
1
400 - Language
1
500 - Natural sciences & mathematics
62
502 - Miscellany
2
510 - Mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
540 - Chemistry & allied sciences
6
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
4
570 - Life sciences; biology
2
576 - Genetics & evolution
3
580 - Plants (Botany)
2
581 - Specific topics in natural history
4
600 - Technology
29
601 - Philosophy & theory
1
610 - Medicine & health
18
613 - Personal health & safety
1
615 - Pharmacology & therapeutics
1
616 - Diseases
2
620 - Engineering & allied operations
22
621 - Applied physics
6
624 - Civil engineering
1
628 - Sanitary & municipal engineering
1
629 - Other branches of engineering
4
630 - Agriculture & related technologies
6
631 - Techniques, equipment & materials
1
634 - Orchards, fruits & forestry
1
647 - Management of public households
1
650 - Management & auxiliary services
188
657 - Accounting
12
658 - General management
1,179
659 - Advertising & public relations
5
660 - Chemical engineering
2
670 - Manufacturing
57
696 - Utilities
1
700 - The arts; fine & decorative arts
35
706 - Organizations & management
1
720 - Architecture
5
740 - Drawing & decorative arts
1
741 - Drawing & drawings
1
745 - Decorative arts
6
780 - Music
4
800 - Literature & rhetoric
20
808 - Rhetoric & collections of literature
1
900 - History & geography
9
930 - History of ancient world to ca. 499
1
941 - British Isles
1
966 - West Africa & offshore islands
1