Classification
610 - Medicine & health
117
320 - Political science
45
330 - Economics
44
900 - History & geography
8
700 - The arts; fine & decorative arts
5
000 - Computer science, information & general works
4
230 - Christianity & Christian theology
4
140 - Specific philosophical schools
3
614 - Incidence & prevention of disease
3
820 - English & Old English literatures
3
100 - Philosophy & psychology
2
300 - Social sciences
2
340 - Law
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
2
570 - Life sciences; biology
2
581 - Specific topics in natural history
2
600 - Technology
2
620 - Engineering & allied operations
2
910 - Geography & travel
2
970 - History of North America
2
170 - Ethics
1
220 - Bible
1
250 - Christian orders & local church
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
400 - Language
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
616 - Diseases
1
630 - Agriculture & related technologies
1
780 - Music
1
791 - Public performances
1
800 - Literature & rhetoric
1