Classification
414 - Phonology & phonetics
600 - Technology
12
900 - History & geography
9
380 - Commerce, communications & transportation
8
620 - Engineering & allied operations
8
576 - Genetics & evolution
7
700 - The arts; fine & decorative arts
6
333 - Economics of land & energy
5
000 - Computer science, information & general works
4
340 - Law
4
551 - Geology, hydrology & meteorology
4
363 - Other social problems & services
3
304 - Factors affecting social behavior
2
800 - Literature & rhetoric
2
320 - Political science
1
330 - Economics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1