Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
330 - Economics
18
320 - Political science
17
000 - Computer science, information & general works
16
380 - Commerce, communications & transportation
16
600 - Technology
16
363 - Other social problems & services
14
900 - History & geography
12
620 - Engineering & allied operations
10
610 - Medicine & health
8
370 - Education
6
551 - Geology, hydrology & meteorology
6
340 - Law
5
576 - Genetics & evolution
5
580 - Plants (Botany)
5
630 - Agriculture & related technologies
5
658 - General management
5
100 - Philosophy & psychology
4
540 - Chemistry & allied sciences
4
300 - Social sciences
3
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
410 - Linguistics
2
414 - Phonology & phonetics
2
581 - Specific topics in natural history
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
400 - Language
1
500 - Natural sciences & mathematics
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1