Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
50
620 - Engineering & allied operations
47
900 - History & geography
44
363 - Other social problems & services
35
000 - Computer science, information & general works
34
333 - Economics of land & energy
33
330 - Economics
30
610 - Medicine & health
28
370 - Education
17
576 - Genetics & evolution
17
320 - Political science
16
400 - Language
12
720 - Architecture
12
500 - Natural sciences & mathematics
10
580 - Plants (Botany)
10
630 - Agriculture & related technologies
10
340 - Law
9
800 - Literature & rhetoric
9
551 - Geology, hydrology & meteorology
8
581 - Specific topics in natural history
8
304 - Factors affecting social behavior
7
658 - General management
7
100 - Philosophy & psychology
5
361 - Social problems & social welfare in general
5
170 - Ethics
4
200 - Religion
4
300 - Social sciences
4
410 - Linguistics
4
540 - Chemistry & allied sciences
2
612 - Human physiology
2
657 - Accounting
2
160 - Logic
1
301 - Sociology & anthropology
1
336 - Public finance
1
414 - Phonology & phonetics
1