Classification
320 - Political science
600 - Technology
330 - Economics
335
333 - Economics of land & energy
216
700 - The arts; fine & decorative arts
176
363 - Other social problems & services
151
620 - Engineering & allied operations
137
900 - History & geography
116
610 - Medicine & health
99
000 - Computer science, information & general works
92
370 - Education
89
380 - Commerce, communications & transportation
87
300 - Social sciences
85
551 - Geology, hydrology & meteorology
62
630 - Agriculture & related technologies
62
140 - Specific philosophical schools
59
304 - Factors affecting social behavior
58
100 - Philosophy & psychology
39
340 - Law
34
581 - Specific topics in natural history
28
170 - Ethics
26
576 - Genetics & evolution
20
200 - Religion
19
720 - Architecture
18
301 - Sociology & anthropology
17
658 - General management
17
580 - Plants (Botany)
16
800 - Literature & rhetoric
14
500 - Natural sciences & mathematics
13
361 - Social problems & social welfare in general
10
400 - Language
9
530 - Physics
8
540 - Chemistry & allied sciences
8
657 - Accounting
8
780 - Music
7
120 - Epistemology, causation & humankind
6
350 - Public administration & military science
6
410 - Linguistics
5
297 - Islam, Babism & Bahai Faith
4
364 - Criminology
4
336 - Public finance
3
360 - Social problems & services; associations
3
414 - Phonology & phonetics
3
520 - Astronomy & allied sciences
3
791 - Public performances
3
160 - Logic
2
550 - Earth sciences
2
615 - Pharmacology & therapeutics
2
770 - Photography, photographs & computer art
2
398 - Folklore
1
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