Classification
140 - Specific philosophical schools
320 - Political science
330 - Economics
32
340 - Law
27
300 - Social sciences
23
333 - Economics of land & energy
23
700 - The arts; fine & decorative arts
23
363 - Other social problems & services
20
900 - History & geography
18
100 - Philosophy & psychology
15
610 - Medicine & health
15
304 - Factors affecting social behavior
14
000 - Computer science, information & general works
12
200 - Religion
12
370 - Education
11
380 - Commerce, communications & transportation
11
170 - Ethics
10
600 - Technology
10
800 - Literature & rhetoric
9
551 - Geology, hydrology & meteorology
8
581 - Specific topics in natural history
8
630 - Agriculture & related technologies
6
301 - Sociology & anthropology
5
580 - Plants (Botany)
4
400 - Language
3
410 - Linguistics
3
576 - Genetics & evolution
3
620 - Engineering & allied operations
3
297 - Islam, Babism & Bahai Faith
2
350 - Public administration & military science
2
361 - Social problems & social welfare in general
2
360 - Social problems & services; associations
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
658 - General management
1
720 - Architecture
1