Classification
320 - Political science
73
340 - Law
34
330 - Economics
25
140 - Specific philosophical schools
19
341 - Law of nations
18
900 - History & geography
17
700 - The arts; fine & decorative arts
13
200 - Religion
12
100 - Philosophy & psychology
11
363 - Other social problems & services
10
000 - Computer science, information & general works
9
333 - Economics of land & energy
9
610 - Medicine & health
8
304 - Factors affecting social behavior
7
230 - Christianity & Christian theology
6
370 - Education
5
576 - Genetics & evolution
5
600 - Technology
5
300 - Social sciences
4
301 - Sociology & anthropology
4
342 - Constitutional & administrative law
4
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
4
630 - Agriculture & related technologies
4
800 - Literature & rhetoric
4
170 - Ethics
3
410 - Linguistics
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
658 - General management
3
327 - International relations
2
530 - Physics
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
305 - Social groups
1
323 - Civil & political rights
1
325 - International migration & colonization
1
328 - The legislative process
1
331 - Labor economics
1
332 - Financial economics
1
343 - Military, tax, trade & industrial law
1
354 - Administration of economy & environment
1
355 - Military science
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
400 - Language
1
550 - Earth sciences
1
720 - Architecture
1
810 - American literature in English
1
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