Classification
140 - Specific philosophical schools
330 - Economics
363 - Other social problems & services
576 - Genetics & evolution
000 - Computer science, information & general works
8
380 - Commerce, communications & transportation
6
333 - Economics of land & energy
5
600 - Technology
5
320 - Political science
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
304 - Factors affecting social behavior
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
657 - Accounting
2
900 - History & geography
2
340 - Law
1
370 - Education
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
658 - General management
1
720 - Architecture
1