Classification
330 - Economics
320 - Political science
241
340 - Law
26
300 - Social sciences
15
900 - History & geography
11
700 - The arts; fine & decorative arts
6
333 - Economics of land & energy
3
363 - Other social problems & services
3
381 - Commerce
3
658 - General management
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
170 - Ethics
2
500 - Natural sciences & mathematics
2
551 - Geology, hydrology & meteorology
2
600 - Technology
2
158 - Applied psychology
1
160 - Logic
1
304 - Factors affecting social behavior
1
370 - Education
1
380 - Commerce, communications & transportation
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
677 - Textiles
1