Classification
000 - Computer science, information & general works
65
001 - Knowledge
1
004 - Data processing & computer science
2
100 - Philosophy & psychology
3
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
34
170 - Ethics
1
200 - Religion
1
300 - Social sciences
4
304 - Factors affecting social behavior
8
320 - Political science
17
330 - Economics
45
331 - Labor economics
1
333 - Economics of land & energy
117
338 - Production
2
340 - Law
13
361 - Social problems & social welfare in general
2
363 - Other social problems & services
71
370 - Education
10
380 - Commerce, communications & transportation
248
381 - Commerce
2
384 - Communications; telecommunication
2
387 - Water, air & space transportation
1
388 - Transportation; ground transportation
1
400 - Language
5
410 - Linguistics
3
414 - Phonology & phonetics
12
500 - Natural sciences & mathematics
33
530 - Physics
7
540 - Chemistry & allied sciences
11
550 - Earth sciences
3
551 - Geology, hydrology & meteorology
27
576 - Genetics & evolution
32
580 - Plants (Botany)
29
581 - Specific topics in natural history
6
600 - Technology
212
610 - Medicine & health
32
612 - Human physiology
6
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
621 - Applied physics
6
623 - Military & nautical engineering
1
629 - Other branches of engineering
10
630 - Agriculture & related technologies
16
650 - Management & auxiliary services
1
657 - Accounting
1
658 - General management
24
660 - Chemical engineering
2
667 - Cleaning, color & coating technologies
1
700 - The arts; fine & decorative arts
135
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