Classification
363 - Other social problems & services
900 - History & geography
600 - Technology
13
620 - Engineering & allied operations
13
700 - The arts; fine & decorative arts
10
333 - Economics of land & energy
6
580 - Plants (Botany)
6
576 - Genetics & evolution
5
320 - Political science
4
330 - Economics
4
581 - Specific topics in natural history
4
140 - Specific philosophical schools
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
000 - Computer science, information & general works
2
340 - Law
2
380 - Commerce, communications & transportation
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
364 - Criminology
1
370 - Education
1
610 - Medicine & health
1
657 - Accounting
1
800 - Literature & rhetoric
1