Classification
300 - Social sciences
301 - Sociology & anthropology
59
900 - History & geography
35
320 - Political science
31
330 - Economics
20
304 - Factors affecting social behavior
18
302 - Social interaction
15
350 - Public administration & military science
15
100 - Philosophy & psychology
14
658 - General management
14
380 - Commerce, communications & transportation
12
700 - The arts; fine & decorative arts
12
600 - Technology
11
200 - Religion
9
610 - Medicine & health
9
500 - Natural sciences & mathematics
8
630 - Agriculture & related technologies
7
331 - Labor economics
6
333 - Economics of land & energy
6
338 - Production
6
620 - Engineering & allied operations
6
001 - Knowledge
5
140 - Specific philosophical schools
5
340 - Law
4
370 - Education
4
384 - Communications; telecommunication
4
720 - Architecture
4
170 - Ethics
3
363 - Other social problems & services
3
400 - Language
3
650 - Management & auxiliary services
3
153 - Mental processes & intelligence
2
297 - Islam, Babism & Bahai Faith
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
670 - Manufacturing
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
158 - Applied psychology
1
160 - Logic
1
174 - Occupational ethics
1
221 - Old Testament (Tanakh)
1
296 - Judaism
1
305 - Social groups
1
360 - Social problems & services; associations
1
362 - Social welfare problems & services
1
364 - Criminology
1
530 - Physics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
more ...