Classification
100 - Philosophy & psychology
320 - Political science
69
900 - History & geography
58
610 - Medicine & health
55
330 - Economics
39
700 - The arts; fine & decorative arts
35
370 - Education
30
170 - Ethics
26
300 - Social sciences
25
140 - Specific philosophical schools
24
340 - Law
24
200 - Religion
20
333 - Economics of land & energy
16
361 - Social problems & social welfare in general
12
363 - Other social problems & services
10
600 - Technology
10
000 - Computer science, information & general works
9
410 - Linguistics
9
800 - Literature & rhetoric
9
780 - Music
8
304 - Factors affecting social behavior
7
380 - Commerce, communications & transportation
6
400 - Language
6
576 - Genetics & evolution
6
301 - Sociology & anthropology
5
620 - Engineering & allied operations
5
500 - Natural sciences & mathematics
4
530 - Physics
4
581 - Specific topics in natural history
4
616 - Diseases
4
155 - Differential & developmental psychology
3
362 - Social welfare problems & services
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
920 - Biography, genealogy & insignia
3
120 - Epistemology, causation & humankind
2
350 - Public administration & military science
2
551 - Geology, hydrology & meteorology
2
657 - Accounting
2
943 - Central Europe; Germany
2
193 - Philosophy of Germany & Austria
1
261 - Social theology
1
297 - Islam, Babism & Bahai Faith
1
305 - Social groups
1
306 - Culture & institutions
1
355 - Military science
1
520 - Astronomy & allied sciences
1
580 - Plants (Botany)
1
770 - Photography, photographs & computer art
1
791 - Public performances
1
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