Classification
340 - Law
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
25
700 - The arts; fine & decorative arts
21
380 - Commerce, communications & transportation
20
000 - Computer science, information & general works
17
333 - Economics of land & energy
16
900 - History & geography
15
140 - Specific philosophical schools
12
330 - Economics
12
610 - Medicine & health
12
320 - Political science
11
576 - Genetics & evolution
10
500 - Natural sciences & mathematics
7
720 - Architecture
6
370 - Education
5
581 - Specific topics in natural history
5
630 - Agriculture & related technologies
5
300 - Social sciences
4
400 - Language
4
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
800 - Literature & rhetoric
3
170 - Ethics
2
200 - Religion
2
540 - Chemistry & allied sciences
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
410 - Linguistics
1
530 - Physics
1
612 - Human physiology
1
657 - Accounting
1