Classification
363 - Other social problems & services
610 - Medicine & health
9
000 - Computer science, information & general works
7
580 - Plants (Botany)
5
600 - Technology
5
333 - Economics of land & energy
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
4
140 - Specific philosophical schools
3
320 - Political science
3
330 - Economics
3
576 - Genetics & evolution
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
304 - Factors affecting social behavior
2
370 - Education
2
300 - Social sciences
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
658 - General management
1