Classification
140 - Specific philosophical schools
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
700 - The arts; fine & decorative arts
620 - Engineering & allied operations
12
333 - Economics of land & energy
9
600 - Technology
9
000 - Computer science, information & general works
8
610 - Medicine & health
8
900 - History & geography
7
320 - Political science
6
500 - Natural sciences & mathematics
6
551 - Geology, hydrology & meteorology
6
720 - Architecture
6
300 - Social sciences
5
340 - Law
5
580 - Plants (Botany)
5
581 - Specific topics in natural history
5
330 - Economics
4
414 - Phonology & phonetics
4
304 - Factors affecting social behavior
3
540 - Chemistry & allied sciences
3
612 - Human physiology
3
170 - Ethics
2
630 - Agriculture & related technologies
2
658 - General management
2
800 - Literature & rhetoric
2
370 - Education
1
657 - Accounting
1