Classification
140 - Specific philosophical schools
333 - Economics of land & energy
363 - Other social problems & services
580 - Plants (Botany)
610 - Medicine & health
700 - The arts; fine & decorative arts
10
380 - Commerce, communications & transportation
9
620 - Engineering & allied operations
8
000 - Computer science, information & general works
6
330 - Economics
6
600 - Technology
6
300 - Social sciences
5
551 - Geology, hydrology & meteorology
5
576 - Genetics & evolution
5
581 - Specific topics in natural history
5
630 - Agriculture & related technologies
5
540 - Chemistry & allied sciences
4
612 - Human physiology
4
900 - History & geography
4
370 - Education
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
170 - Ethics
2
304 - Factors affecting social behavior
2
340 - Law
2
658 - General management
2
720 - Architecture
2
800 - Literature & rhetoric
2
297 - Islam, Babism & Bahai Faith
1
530 - Physics
1