Classification
363 - Other social problems & services
380 - Commerce, communications & transportation
25
576 - Genetics & evolution
700 - The arts; fine & decorative arts
18
000 - Computer science, information & general works
15
333 - Economics of land & energy
14
600 - Technology
13
140 - Specific philosophical schools
12
620 - Engineering & allied operations
12
900 - History & geography
9
320 - Political science
8
610 - Medicine & health
8
330 - Economics
7
500 - Natural sciences & mathematics
7
551 - Geology, hydrology & meteorology
6
581 - Specific topics in natural history
6
340 - Law
5
540 - Chemistry & allied sciences
5
304 - Factors affecting social behavior
4
414 - Phonology & phonetics
4
580 - Plants (Botany)
4
720 - Architecture
4
300 - Social sciences
3
530 - Physics
3
612 - Human physiology
3
800 - Literature & rhetoric
3
410 - Linguistics
2
658 - General management
2
370 - Education
1
650 - Management & auxiliary services
1
657 - Accounting
1