Classification
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
320 - Political science
2
340 - Law
2
363 - Other social problems & services
2
600 - Technology
2
170 - Ethics
1
301 - Sociology & anthropology
1
330 - Economics
1
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
900 - History & geography
1