Classification
610 - Medicine & health
30
330 - Economics
5
616 - Diseases
3
362 - Social welfare problems & services
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
363 - Other social problems & services
1
370 - Education
1
600 - Technology
1
612 - Human physiology
1
700 - The arts; fine & decorative arts
1