Classification
140 - Specific philosophical schools
330 - Economics
610 - Medicine & health
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
363 - Other social problems & services
7
000 - Computer science, information & general works
6
333 - Economics of land & energy
6
320 - Political science
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
4
600 - Technology
4
304 - Factors affecting social behavior
3
340 - Law
3
658 - General management
3
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
900 - History & geography
2
300 - Social sciences
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
370 - Education
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1
657 - Accounting
1