Classification
540 - Chemistry & allied sciences
620 - Engineering & allied operations
600 - Technology
28
700 - The arts; fine & decorative arts
26
000 - Computer science, information & general works
14
333 - Economics of land & energy
10
580 - Plants (Botany)
9
610 - Medicine & health
8
900 - History & geography
8
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
330 - Economics
3
414 - Phonology & phonetics
3
140 - Specific philosophical schools
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
612 - Human physiology
2
630 - Agriculture & related technologies
2
720 - Architecture
2
304 - Factors affecting social behavior
1
370 - Education
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1