Classification
320 - Political science
552
900 - History & geography
364
330 - Economics
221
306 - Culture & institutions
177
300 - Social sciences
137
370 - Education
122
700 - The arts; fine & decorative arts
103
301 - Sociology & anthropology
100
100 - Philosophy & psychology
91
800 - Literature & rhetoric
80
340 - Law
78
305 - Social groups
77
363 - Other social problems & services
76
200 - Religion
72
333 - Economics of land & energy
69
338 - Production
65
658 - General management
63
304 - Factors affecting social behavior
61
327 - International relations
56
140 - Specific philosophical schools
46
302 - Social interaction
45
410 - Linguistics
45
418 - Standard usage & applied linguistics
44
610 - Medicine & health
44
791 - Public performances
43
930 - History of ancient world to ca. 499
41
400 - Language
36
380 - Commerce, communications & transportation
34
809 - History, description & criticism
33
303 - Social processes
32
371 - Schools & their activities; special education
29
501 - Philosophy & theory
29
170 - Ethics
28
940 - History of Europe
28
297 - Islam, Babism & Bahai Faith
27
500 - Natural sciences & mathematics
26
576 - Genetics & evolution
23
324 - The political process
22
364 - Criminology
22
620 - Engineering & allied operations
22
006 - Special computer methods
21
331 - Labor economics
21
361 - Social problems & social welfare in general
21
600 - Technology
21
155 - Differential & developmental psychology
20
307 - Communities
20
150 - Psychology
19
379 - Public policy issues in education
18
342 - Constitutional & administrative law
17
000 - Computer science, information & general works
16
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