Classification
330 - Economics
610 - Medicine & health
333 - Economics of land & energy
7
380 - Commerce, communications & transportation
6
700 - The arts; fine & decorative arts
6
140 - Specific philosophical schools
5
370 - Education
5
100 - Philosophy & psychology
4
300 - Social sciences
4
304 - Factors affecting social behavior
4
340 - Law
4
900 - History & geography
4
320 - Political science
3
363 - Other social problems & services
3
000 - Computer science, information & general works
2
301 - Sociology & anthropology
2
410 - Linguistics
2
581 - Specific topics in natural history
2
600 - Technology
2
630 - Agriculture & related technologies
2
658 - General management
2
200 - Religion
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
612 - Human physiology
1