Classification
170 - Ethics
330 - Economics
475
320 - Political science
322
100 - Philosophy & psychology
261
140 - Specific philosophical schools
148
610 - Medicine & health
147
658 - General management
132
158 - Applied psychology
108
700 - The arts; fine & decorative arts
97
900 - History & geography
93
340 - Law
91
300 - Social sciences
90
600 - Technology
82
174 - Occupational ethics
73
200 - Religion
66
333 - Economics of land & energy
59
331 - Labor economics
51
370 - Education
51
650 - Management & auxiliary services
50
000 - Computer science, information & general works
49
363 - Other social problems & services
49
380 - Commerce, communications & transportation
39
800 - Literature & rhetoric
36
301 - Sociology & anthropology
35
620 - Engineering & allied operations
35
338 - Production
34
302 - Social interaction
31
400 - Language
28
580 - Plants (Botany)
24
361 - Social problems & social welfare in general
23
120 - Epistemology, causation & humankind
21
500 - Natural sciences & mathematics
21
530 - Physics
18
551 - Geology, hydrology & meteorology
16
304 - Factors affecting social behavior
15
576 - Genetics & evolution
14
581 - Specific topics in natural history
14
670 - Manufacturing
12
297 - Islam, Babism & Bahai Faith
11
410 - Linguistics
11
630 - Agriculture & related technologies
11
381 - Commerce
8
791 - Public performances
8
153 - Mental processes & intelligence
7
332 - Financial economics
7
384 - Communications; telecommunication
7
720 - Architecture
6
001 - Knowledge
5
155 - Differential & developmental psychology
5
360 - Social problems & services; associations
5
more ...