Classification
140 - Specific philosophical schools
333 - Economics of land & energy
330 - Economics
12
363 - Other social problems & services
12
700 - The arts; fine & decorative arts
12
610 - Medicine & health
10
370 - Education
9
380 - Commerce, communications & transportation
8
600 - Technology
8
000 - Computer science, information & general works
7
551 - Geology, hydrology & meteorology
6
900 - History & geography
6
320 - Political science
5
300 - Social sciences
4
658 - General management
4
800 - Literature & rhetoric
4
100 - Philosophy & psychology
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
170 - Ethics
2
200 - Religion
2
304 - Factors affecting social behavior
2
340 - Law
2
580 - Plants (Botany)
2
770 - Photography, photographs & computer art
2
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
720 - Architecture
1
780 - Music
1