Classification
580 - Plants (Botany)
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
600 - Technology
17
333 - Economics of land & energy
14
900 - History & geography
12
630 - Agriculture & related technologies
9
610 - Medicine & health
8
000 - Computer science, information & general works
7
330 - Economics
6
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
100 - Philosophy & psychology
3
576 - Genetics & evolution
3
658 - General management
2
140 - Specific philosophical schools
1
320 - Political science
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
612 - Human physiology
1