Classification
000 - Computer science, information & general works
610 - Medicine & health
33
700 - The arts; fine & decorative arts
17
140 - Specific philosophical schools
13
576 - Genetics & evolution
12
380 - Commerce, communications & transportation
11
580 - Plants (Botany)
11
363 - Other social problems & services
10
333 - Economics of land & energy
8
500 - Natural sciences & mathematics
8
551 - Geology, hydrology & meteorology
8
620 - Engineering & allied operations
8
600 - Technology
6
330 - Economics
5
612 - Human physiology
5
300 - Social sciences
4
540 - Chemistry & allied sciences
4
581 - Specific topics in natural history
4
414 - Phonology & phonetics
3
658 - General management
3
170 - Ethics
2
370 - Education
2
530 - Physics
2
630 - Agriculture & related technologies
2
900 - History & geography
2
001 - Knowledge
1
304 - Factors affecting social behavior
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
590 - Animals (Zoology)
1
720 - Architecture
1