Classification
540 - Chemistry & allied sciences
700 - The arts; fine & decorative arts
74
000 - Computer science, information & general works
57
620 - Engineering & allied operations
45
600 - Technology
43
333 - Economics of land & energy
31
610 - Medicine & health
25
580 - Plants (Botany)
17
363 - Other social problems & services
15
500 - Natural sciences & mathematics
10
380 - Commerce, communications & transportation
9
414 - Phonology & phonetics
9
900 - History & geography
8
530 - Physics
6
140 - Specific philosophical schools
4
330 - Economics
4
576 - Genetics & evolution
4
630 - Agriculture & related technologies
4
720 - Architecture
4
800 - Literature & rhetoric
3
304 - Factors affecting social behavior
2
612 - Human physiology
2
370 - Education
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1