Classification
320 - Political science
380 - Commerce, communications & transportation
576 - Genetics & evolution
600 - Technology
4
700 - The arts; fine & decorative arts
900 - History & geography
140 - Specific philosophical schools
3
340 - Law
3
363 - Other social problems & services
3
500 - Natural sciences & mathematics
3
620 - Engineering & allied operations
3
720 - Architecture
3
200 - Religion
1
304 - Factors affecting social behavior
1
330 - Economics
1
630 - Agriculture & related technologies
1