Classification
363 - Other social problems & services
900 - History & geography
600 - Technology
350
620 - Engineering & allied operations
340
700 - The arts; fine & decorative arts
254
333 - Economics of land & energy
231
330 - Economics
138
000 - Computer science, information & general works
116
380 - Commerce, communications & transportation
99
320 - Political science
89
140 - Specific philosophical schools
80
610 - Medicine & health
80
551 - Geology, hydrology & meteorology
76
580 - Plants (Botany)
65
581 - Specific topics in natural history
56
370 - Education
50
720 - Architecture
47
576 - Genetics & evolution
46
800 - Literature & rhetoric
35
300 - Social sciences
33
630 - Agriculture & related technologies
29
340 - Law
28
301 - Sociology & anthropology
24
414 - Phonology & phonetics
24
100 - Philosophy & psychology
23
400 - Language
23
540 - Chemistry & allied sciences
22
500 - Natural sciences & mathematics
20
304 - Factors affecting social behavior
19
200 - Religion
15
658 - General management
14
170 - Ethics
11
530 - Physics
10
780 - Music
7
410 - Linguistics
5
770 - Photography, photographs & computer art
5
120 - Epistemology, causation & humankind
4
550 - Earth sciences
4
590 - Animals (Zoology)
4
297 - Islam, Babism & Bahai Faith
3
361 - Social problems & social welfare in general
3
612 - Human physiology
3
657 - Accounting
3
350 - Public administration & military science
2
615 - Pharmacology & therapeutics
2
920 - Biography, genealogy & insignia
2
360 - Social problems & services; associations
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
650 - Management & auxiliary services
1
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