Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
140 - Specific philosophical schools
5
610 - Medicine & health
5
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
370 - Education
3
576 - Genetics & evolution
3
700 - The arts; fine & decorative arts
3
304 - Factors affecting social behavior
2
330 - Economics
2
658 - General management
2
320 - Political science
1
400 - Language
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
900 - History & geography
1