Classification
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
320 - Political science
8
000 - Computer science, information & general works
6
600 - Technology
5
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
3
304 - Factors affecting social behavior
2
370 - Education
2
410 - Linguistics
2
610 - Medicine & health
2
657 - Accounting
2
800 - Literature & rhetoric
2
340 - Law
1
414 - Phonology & phonetics
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1