Classification
320 - Political science
576 - Genetics & evolution
600 - Technology
700 - The arts; fine & decorative arts
363 - Other social problems & services
8
380 - Commerce, communications & transportation
7
620 - Engineering & allied operations
7
140 - Specific philosophical schools
6
330 - Economics
5
900 - History & geography
5
333 - Economics of land & energy
4
340 - Law
4
500 - Natural sciences & mathematics
3
720 - Architecture
3
000 - Computer science, information & general works
2
551 - Geology, hydrology & meteorology
2
658 - General management
2
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
370 - Education
1
580 - Plants (Botany)
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
657 - Accounting
1