Classification
540 - Chemistry & allied sciences
92
600 - Technology
30
700 - The arts; fine & decorative arts
25
000 - Computer science, information & general works
24
333 - Economics of land & energy
22
620 - Engineering & allied operations
18
363 - Other social problems & services
11
610 - Medicine & health
10
900 - History & geography
9
576 - Genetics & evolution
7
380 - Commerce, communications & transportation
6
140 - Specific philosophical schools
5
500 - Natural sciences & mathematics
5
530 - Physics
5
580 - Plants (Botany)
4
414 - Phonology & phonetics
3
612 - Human physiology
3
304 - Factors affecting social behavior
2
330 - Economics
2
800 - Literature & rhetoric
2
160 - Logic
1
370 - Education
1
615 - Pharmacology & therapeutics
1
630 - Agriculture & related technologies
1
658 - General management
1
720 - Architecture
1