Classification
363 - Other social problems & services
700 - The arts; fine & decorative arts
42
600 - Technology
35
620 - Engineering & allied operations
34
000 - Computer science, information & general works
27
900 - History & geography
24
333 - Economics of land & energy
20
380 - Commerce, communications & transportation
17
576 - Genetics & evolution
17
140 - Specific philosophical schools
11
540 - Chemistry & allied sciences
11
330 - Economics
10
610 - Medicine & health
10
580 - Plants (Botany)
9
304 - Factors affecting social behavior
8
340 - Law
7
500 - Natural sciences & mathematics
7
414 - Phonology & phonetics
6
551 - Geology, hydrology & meteorology
5
630 - Agriculture & related technologies
5
720 - Architecture
5
800 - Literature & rhetoric
4
320 - Political science
3
170 - Ethics
2
300 - Social sciences
2
530 - Physics
2
581 - Specific topics in natural history
2
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
658 - General management
1