Classification
580 - Plants (Botany)
610 - Medicine & health
612 - Human physiology
700 - The arts; fine & decorative arts
15
000 - Computer science, information & general works
12
140 - Specific philosophical schools
8
333 - Economics of land & energy
8
380 - Commerce, communications & transportation
8
540 - Chemistry & allied sciences
7
363 - Other social problems & services
5
414 - Phonology & phonetics
5
620 - Engineering & allied operations
5
500 - Natural sciences & mathematics
4
551 - Geology, hydrology & meteorology
4
600 - Technology
4
300 - Social sciences
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
2
900 - History & geography
2
100 - Philosophy & psychology
1
330 - Economics
1
361 - Social problems & social welfare in general
1
370 - Education
1