Classification
330 - Economics
363 - Other social problems & services
000 - Computer science, information & general works
26
333 - Economics of land & energy
24
700 - The arts; fine & decorative arts
24
600 - Technology
19
380 - Commerce, communications & transportation
17
610 - Medicine & health
15
370 - Education
13
320 - Political science
12
551 - Geology, hydrology & meteorology
12
620 - Engineering & allied operations
12
140 - Specific philosophical schools
10
900 - History & geography
10
630 - Agriculture & related technologies
9
720 - Architecture
8
658 - General management
6
580 - Plants (Botany)
4
581 - Specific topics in natural history
4
304 - Factors affecting social behavior
3
340 - Law
3
576 - Genetics & evolution
3
361 - Social problems & social welfare in general
2
400 - Language
2
800 - Literature & rhetoric
2
100 - Philosophy & psychology
1
160 - Logic
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1