Classification
363 - Other social problems & services
576 - Genetics & evolution
600 - Technology
620 - Engineering & allied operations
37
700 - The arts; fine & decorative arts
37
900 - History & geography
29
333 - Economics of land & energy
27
000 - Computer science, information & general works
22
380 - Commerce, communications & transportation
22
330 - Economics
19
610 - Medicine & health
15
140 - Specific philosophical schools
13
320 - Political science
12
580 - Plants (Botany)
11
340 - Law
10
720 - Architecture
8
414 - Phonology & phonetics
7
630 - Agriculture & related technologies
7
658 - General management
7
370 - Education
6
500 - Natural sciences & mathematics
6
551 - Geology, hydrology & meteorology
6
581 - Specific topics in natural history
6
800 - Literature & rhetoric
6
304 - Factors affecting social behavior
5
300 - Social sciences
4
540 - Chemistry & allied sciences
3
170 - Ethics
2
400 - Language
2
530 - Physics
2
657 - Accounting
2
100 - Philosophy & psychology
1
350 - Public administration & military science
1
410 - Linguistics
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
791 - Public performances
1