Classification
300 - Social sciences
610 - Medicine & health
21
330 - Economics
6
140 - Specific philosophical schools
4
301 - Sociology & anthropology
4
100 - Philosophy & psychology
3
170 - Ethics
3
304 - Factors affecting social behavior
3
380 - Commerce, communications & transportation
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
000 - Computer science, information & general works
2
320 - Political science
2
400 - Language
2
410 - Linguistics
2
500 - Natural sciences & mathematics
2
333 - Economics of land & energy
1
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
370 - Education
1
600 - Technology
1