Classification
333 - Economics of land & energy
380 - Commerce, communications & transportation
530 - Physics
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
17
600 - Technology
8
330 - Economics
6
340 - Law
5
363 - Other social problems & services
5
500 - Natural sciences & mathematics
4
540 - Chemistry & allied sciences
4
576 - Genetics & evolution
4
620 - Engineering & allied operations
4
658 - General management
3
320 - Political science
2
414 - Phonology & phonetics
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
900 - History & geography
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
650 - Management & auxiliary services
1
657 - Accounting
1
800 - Literature & rhetoric
1