Classification
170 - Ethics
330 - Economics
622
320 - Political science
502
100 - Philosophy & psychology
446
140 - Specific philosophical schools
205
900 - History & geography
190
610 - Medicine & health
188
300 - Social sciences
176
200 - Religion
166
340 - Law
153
700 - The arts; fine & decorative arts
149
658 - General management
144
158 - Applied psychology
114
600 - Technology
107
174 - Occupational ethics
80
370 - Education
79
333 - Economics of land & energy
76
000 - Computer science, information & general works
66
363 - Other social problems & services
65
800 - Literature & rhetoric
57
650 - Management & auxiliary services
55
331 - Labor economics
52
301 - Sociology & anthropology
48
380 - Commerce, communications & transportation
47
620 - Engineering & allied operations
41
400 - Language
40
120 - Epistemology, causation & humankind
36
338 - Production
36
302 - Social interaction
32
361 - Social problems & social welfare in general
31
500 - Natural sciences & mathematics
29
580 - Plants (Botany)
26
530 - Physics
23
304 - Factors affecting social behavior
22
581 - Specific topics in natural history
22
410 - Linguistics
21
576 - Genetics & evolution
19
551 - Geology, hydrology & meteorology
18
297 - Islam, Babism & Bahai Faith
16
630 - Agriculture & related technologies
14
670 - Manufacturing
12
160 - Logic
10
381 - Commerce
8
384 - Communications; telecommunication
8
153 - Mental processes & intelligence
7
332 - Financial economics
7
360 - Social problems & services; associations
7
780 - Music
7
001 - Knowledge
6
241 - Christian ethics
6
more ...