Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
363 - Other social problems & services
333 - Economics of land & energy
44
700 - The arts; fine & decorative arts
36
551 - Geology, hydrology & meteorology
26
600 - Technology
18
610 - Medicine & health
17
380 - Commerce, communications & transportation
16
140 - Specific philosophical schools
15
630 - Agriculture & related technologies
13
620 - Engineering & allied operations
10
900 - History & geography
10
370 - Education
8
576 - Genetics & evolution
8
581 - Specific topics in natural history
8
658 - General management
7
580 - Plants (Botany)
6
304 - Factors affecting social behavior
5
720 - Architecture
5
340 - Law
4
550 - Earth sciences
3
800 - Literature & rhetoric
3
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
414 - Phonology & phonetics
2
540 - Chemistry & allied sciences
2
657 - Accounting
2
100 - Philosophy & psychology
1
301 - Sociology & anthropology
1
400 - Language
1
500 - Natural sciences & mathematics
1