Classification
320 - Political science
73
300 - Social sciences
54
700 - The arts; fine & decorative arts
54
330 - Economics
52
900 - History & geography
48
610 - Medicine & health
47
333 - Economics of land & energy
41
600 - Technology
41
340 - Law
38
370 - Education
37
000 - Computer science, information & general works
36
363 - Other social problems & services
30
380 - Commerce, communications & transportation
27
620 - Engineering & allied operations
26
140 - Specific philosophical schools
23
100 - Philosophy & psychology
21
551 - Geology, hydrology & meteorology
20
304 - Factors affecting social behavior
18
580 - Plants (Botany)
17
301 - Sociology & anthropology
15
361 - Social problems & social welfare in general
14
400 - Language
13
170 - Ethics
12
581 - Specific topics in natural history
11
200 - Religion
9
500 - Natural sciences & mathematics
9
800 - Literature & rhetoric
9
410 - Linguistics
8
630 - Agriculture & related technologies
8
360 - Social problems & services; associations
7
540 - Chemistry & allied sciences
7
720 - Architecture
6
530 - Physics
5
364 - Criminology
4
576 - Genetics & evolution
4
297 - Islam, Babism & Bahai Faith
3
658 - General management
3
780 - Music
3
414 - Phonology & phonetics
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
336 - Public finance
1
350 - Public administration & military science
1
520 - Astronomy & allied sciences
1
590 - Animals (Zoology)
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
791 - Public performances
1