Classification
900 - History & geography
92
370 - Education
76
140 - Specific philosophical schools
68
330 - Economics
66
700 - The arts; fine & decorative arts
58
320 - Political science
38
340 - Law
37
100 - Philosophy & psychology
36
300 - Social sciences
35
333 - Economics of land & energy
35
540 - Chemistry & allied sciences
33
363 - Other social problems & services
23
610 - Medicine & health
23
400 - Language
15
380 - Commerce, communications & transportation
14
000 - Computer science, information & general works
12
600 - Technology
11
576 - Genetics & evolution
10
800 - Literature & rhetoric
10
301 - Sociology & anthropology
8
615 - Pharmacology & therapeutics
8
620 - Engineering & allied operations
7
581 - Specific topics in natural history
6
630 - Agriculture & related technologies
6
200 - Religion
5
551 - Geology, hydrology & meteorology
5
580 - Plants (Botany)
5
500 - Natural sciences & mathematics
4
780 - Music
4
170 - Ethics
3
304 - Factors affecting social behavior
3
410 - Linguistics
2
658 - General management
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
398 - Folklore
1
530 - Physics
1
657 - Accounting
1
791 - Public performances
1