Classification
330 - Economics
15
572 - Biochemistry
6
301 - Sociology & anthropology
3
580 - Plants (Botany)
3
140 - Specific philosophical schools
2
307 - Communities
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
364 - Criminology
2
658 - General management
2
158 - Applied psychology
1
304 - Factors affecting social behavior
1
306 - Culture & institutions
1
320 - Political science
1
340 - Law
1
362 - Social welfare problems & services
1
550 - Earth sciences
1
570 - Life sciences; biology
1
600 - Technology
1
610 - Medicine & health
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
617 - Surgery & related medical specialties
1
650 - Management & auxiliary services
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1
900 - History & geography
1
910 - Geography & travel
1