Classification
140 - Specific philosophical schools
363 - Other social problems & services
380 - Commerce, communications & transportation
551 - Geology, hydrology & meteorology
333 - Economics of land & energy
17
000 - Computer science, information & general works
14
330 - Economics
14
700 - The arts; fine & decorative arts
11
620 - Engineering & allied operations
10
580 - Plants (Botany)
9
610 - Medicine & health
9
600 - Technology
7
576 - Genetics & evolution
6
581 - Specific topics in natural history
6
900 - History & geography
6
370 - Education
5
414 - Phonology & phonetics
5
320 - Political science
4
658 - General management
4
300 - Social sciences
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
720 - Architecture
3
170 - Ethics
2
304 - Factors affecting social behavior
2
336 - Public finance
1
361 - Social problems & social welfare in general
1
400 - Language
1
657 - Accounting
1
800 - Literature & rhetoric
1