Classification
580 - Plants (Botany)
610 - Medicine & health
000 - Computer science, information & general works
26
700 - The arts; fine & decorative arts
23
363 - Other social problems & services
16
600 - Technology
16
333 - Economics of land & energy
15
620 - Engineering & allied operations
15
630 - Agriculture & related technologies
14
380 - Commerce, communications & transportation
8
140 - Specific philosophical schools
7
330 - Economics
6
551 - Geology, hydrology & meteorology
6
900 - History & geography
6
581 - Specific topics in natural history
5
340 - Law
4
540 - Chemistry & allied sciences
4
720 - Architecture
4
800 - Literature & rhetoric
4
304 - Factors affecting social behavior
3
414 - Phonology & phonetics
3
576 - Genetics & evolution
3
170 - Ethics
2
300 - Social sciences
2
361 - Social problems & social welfare in general
2
100 - Philosophy & psychology
1
320 - Political science
1
590 - Animals (Zoology)
1
612 - Human physiology
1
657 - Accounting
1
658 - General management
1