Classification
620 - Engineering & allied operations
600 - Technology
9
700 - The arts; fine & decorative arts
9
610 - Medicine & health
8
000 - Computer science, information & general works
7
380 - Commerce, communications & transportation
7
580 - Plants (Botany)
7
140 - Specific philosophical schools
6
540 - Chemistry & allied sciences
6
576 - Genetics & evolution
5
363 - Other social problems & services
4
300 - Social sciences
3
333 - Economics of land & energy
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
612 - Human physiology
3
630 - Agriculture & related technologies
2
900 - History & geography
2
340 - Law
1
400 - Language
1
615 - Pharmacology & therapeutics
1
632 - Plant injuries, diseases & pests
1
720 - Architecture
1