Classification
330 - Economics
363 - Other social problems & services
576 - Genetics & evolution
000 - Computer science, information & general works
24
333 - Economics of land & energy
24
600 - Technology
19
320 - Political science
16
700 - The arts; fine & decorative arts
14
380 - Commerce, communications & transportation
13
140 - Specific philosophical schools
9
620 - Engineering & allied operations
9
900 - History & geography
8
551 - Geology, hydrology & meteorology
7
581 - Specific topics in natural history
7
658 - General management
6
610 - Medicine & health
5
800 - Literature & rhetoric
5
304 - Factors affecting social behavior
4
370 - Education
4
580 - Plants (Botany)
4
300 - Social sciences
3
340 - Law
3
410 - Linguistics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
400 - Language
2
657 - Accounting
2
720 - Architecture
2
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
414 - Phonology & phonetics
1