Classification
320 - Political science
700 - The arts; fine & decorative arts
330 - Economics
19
333 - Economics of land & energy
19
363 - Other social problems & services
16
600 - Technology
13
000 - Computer science, information & general works
12
380 - Commerce, communications & transportation
9
620 - Engineering & allied operations
9
900 - History & geography
8
658 - General management
7
551 - Geology, hydrology & meteorology
6
610 - Medicine & health
6
580 - Plants (Botany)
5
720 - Architecture
5
140 - Specific philosophical schools
4
370 - Education
4
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
304 - Factors affecting social behavior
2
100 - Philosophy & psychology
1
200 - Religion
1
300 - Social sciences
1
340 - Law
1
410 - Linguistics
1
576 - Genetics & evolution
1
650 - Management & auxiliary services
1
657 - Accounting
1