Classification
361 - Social problems & social welfare in general
700 - The arts; fine & decorative arts
330 - Economics
20
000 - Computer science, information & general works
15
140 - Specific philosophical schools
14
320 - Political science
14
600 - Technology
12
610 - Medicine & health
12
333 - Economics of land & energy
10
900 - History & geography
10
380 - Commerce, communications & transportation
9
620 - Engineering & allied operations
7
363 - Other social problems & services
6
340 - Law
5
360 - Social problems & services; associations
5
630 - Agriculture & related technologies
5
170 - Ethics
4
300 - Social sciences
4
304 - Factors affecting social behavior
4
200 - Religion
3
301 - Sociology & anthropology
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
100 - Philosophy & psychology
2
370 - Education
2
400 - Language
2
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
551 - Geology, hydrology & meteorology
2
590 - Animals (Zoology)
2
658 - General management
2
791 - Public performances
2
800 - Literature & rhetoric
2
364 - Criminology
1
576 - Genetics & evolution
1
780 - Music
1