Classification
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
576 - Genetics & evolution
600 - Technology
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
363 - Other social problems & services
3
610 - Medicine & health
2
658 - General management
2
140 - Specific philosophical schools
1
200 - Religion
1
304 - Factors affecting social behavior
1
340 - Law
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
657 - Accounting
1
900 - History & geography
1