Classification
610 - Medicine & health
900 - History & geography
700 - The arts; fine & decorative arts
13
600 - Technology
11
620 - Engineering & allied operations
11
140 - Specific philosophical schools
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
4
580 - Plants (Botany)
4
100 - Philosophy & psychology
3
301 - Sociology & anthropology
3
363 - Other social problems & services
3
800 - Literature & rhetoric
3
170 - Ethics
2
330 - Economics
2
370 - Education
2
380 - Commerce, communications & transportation
2
530 - Physics
2
612 - Human physiology
2
720 - Architecture
2
780 - Music
2
200 - Religion
1
300 - Social sciences
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1