Classification
330 - Economics
653
320 - Political science
651
300 - Social sciences
126
340 - Law
92
370 - Education
90
900 - History & geography
68
305 - Social groups
39
306 - Culture & institutions
34
331 - Labor economics
23
700 - The arts; fine & decorative arts
22
610 - Medicine & health
17
800 - Literature & rhetoric
16
630 - Agriculture & related technologies
12
301 - Sociology & anthropology
11
304 - Factors affecting social behavior
11
360 - Social problems & services; associations
9
200 - Religion
8
307 - Communities
8
378 - Higher education
8
720 - Architecture
7
333 - Economics of land & energy
6
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
809 - History, description & criticism
6
338 - Production
5
361 - Social problems & social welfare in general
5
576 - Genetics & evolution
5
100 - Philosophy & psychology
4
140 - Specific philosophical schools
4
400 - Language
4
930 - History of ancient world to ca. 499
4
940 - History of Europe
4
004 - Data processing & computer science
3
005 - Computer programming, programs & data
3
323 - Civil & political rights
3
335 - Socialism & related systems
3
379 - Public policy issues in education
3
510 - Mathematics
3
600 - Technology
3
650 - Management & auxiliary services
3
658 - General management
3
791 - Public performances
3
941 - British Isles
3
000 - Computer science, information & general works
2
155 - Differential & developmental psychology
2
160 - Logic
2
303 - Social processes
2
321 - Systems of governments & states
2
324 - The political process
2
336 - Public finance
2
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