Classification
140 - Specific philosophical schools
320 - Political science
330 - Economics
363 - Other social problems & services
333 - Economics of land & energy
30
700 - The arts; fine & decorative arts
29
000 - Computer science, information & general works
18
551 - Geology, hydrology & meteorology
16
600 - Technology
12
610 - Medicine & health
12
581 - Specific topics in natural history
11
380 - Commerce, communications & transportation
8
300 - Social sciences
7
620 - Engineering & allied operations
6
900 - History & geography
6
340 - Law
5
304 - Factors affecting social behavior
4
370 - Education
4
576 - Genetics & evolution
4
100 - Philosophy & psychology
3
170 - Ethics
3
580 - Plants (Botany)
3
630 - Agriculture & related technologies
3
720 - Architecture
3
297 - Islam, Babism & Bahai Faith
2
361 - Social problems & social welfare in general
2
414 - Phonology & phonetics
2
800 - Literature & rhetoric
2
200 - Religion
1
301 - Sociology & anthropology
1
336 - Public finance
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
657 - Accounting
1
658 - General management
1