Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
6
380 - Commerce, communications & transportation
576 - Genetics & evolution
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
5
363 - Other social problems & services
4
140 - Specific philosophical schools
3
600 - Technology
3
304 - Factors affecting social behavior
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
340 - Law
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
657 - Accounting
1
658 - General management
1