Classification
140 - Specific philosophical schools
320 - Political science
363 - Other social problems & services
600 - Technology
330 - Economics
12
333 - Economics of land & energy
12
700 - The arts; fine & decorative arts
12
380 - Commerce, communications & transportation
11
620 - Engineering & allied operations
10
000 - Computer science, information & general works
8
581 - Specific topics in natural history
7
551 - Geology, hydrology & meteorology
6
610 - Medicine & health
5
900 - History & geography
5
300 - Social sciences
4
340 - Law
4
361 - Social problems & social welfare in general
4
576 - Genetics & evolution
4
720 - Architecture
4
200 - Religion
3
370 - Education
3
500 - Natural sciences & mathematics
3
800 - Literature & rhetoric
2
170 - Ethics
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
336 - Public finance
1
580 - Plants (Botany)
1
657 - Accounting
1
658 - General management
1