Classification
140 - Specific philosophical schools
300 - Social sciences
363 - Other social problems & services
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
7
610 - Medicine & health
6
620 - Engineering & allied operations
6
333 - Economics of land & energy
5
576 - Genetics & evolution
5
580 - Plants (Botany)
5
000 - Computer science, information & general works
4
900 - History & geography
4
340 - Law
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
612 - Human physiology
3
720 - Architecture
3
800 - Literature & rhetoric
3
170 - Ethics
2
330 - Economics
2
600 - Technology
2
630 - Agriculture & related technologies
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
370 - Education
1