Classification
330 - Economics
35
600 - Technology
31
700 - The arts; fine & decorative arts
19
370 - Education
18
000 - Computer science, information & general works
16
333 - Economics of land & energy
14
320 - Political science
12
380 - Commerce, communications & transportation
11
610 - Medicine & health
11
140 - Specific philosophical schools
10
363 - Other social problems & services
10
620 - Engineering & allied operations
8
551 - Geology, hydrology & meteorology
7
720 - Architecture
6
900 - History & geography
6
100 - Philosophy & psychology
4
400 - Language
4
500 - Natural sciences & mathematics
4
630 - Agriculture & related technologies
4
658 - General management
4
170 - Ethics
3
800 - Literature & rhetoric
3
300 - Social sciences
2
340 - Law
2
410 - Linguistics
2
414 - Phonology & phonetics
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
657 - Accounting
2
200 - Religion
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
540 - Chemistry & allied sciences
1
615 - Pharmacology & therapeutics
1
621 - Applied physics
1
770 - Photography, photographs & computer art
1