Classification
700 - The arts; fine & decorative arts
600 - Technology
66
000 - Computer science, information & general works
42
620 - Engineering & allied operations
42
333 - Economics of land & energy
39
900 - History & geography
30
610 - Medicine & health
23
363 - Other social problems & services
22
540 - Chemistry & allied sciences
21
580 - Plants (Botany)
20
330 - Economics
18
380 - Commerce, communications & transportation
13
530 - Physics
11
576 - Genetics & evolution
9
140 - Specific philosophical schools
8
414 - Phonology & phonetics
8
630 - Agriculture & related technologies
7
340 - Law
5
800 - Literature & rhetoric
5
551 - Geology, hydrology & meteorology
4
370 - Education
3
650 - Management & auxiliary services
2
658 - General management
2
720 - Architecture
2
304 - Factors affecting social behavior
1
320 - Political science
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
581 - Specific topics in natural history
1
612 - Human physiology
1
657 - Accounting
1