Classification
140 - Specific philosophical schools
330 - Economics
288
320 - Political science
138
333 - Economics of land & energy
132
363 - Other social problems & services
127
700 - The arts; fine & decorative arts
115
610 - Medicine & health
107
000 - Computer science, information & general works
86
300 - Social sciences
80
600 - Technology
74
900 - History & geography
72
380 - Commerce, communications & transportation
57
551 - Geology, hydrology & meteorology
46
370 - Education
45
340 - Law
41
620 - Engineering & allied operations
36
100 - Philosophy & psychology
33
170 - Ethics
29
581 - Specific topics in natural history
28
301 - Sociology & anthropology
27
630 - Agriculture & related technologies
23
304 - Factors affecting social behavior
22
576 - Genetics & evolution
22
580 - Plants (Botany)
22
658 - General management
21
800 - Literature & rhetoric
19
500 - Natural sciences & mathematics
18
200 - Religion
16
361 - Social problems & social welfare in general
12
410 - Linguistics
7
540 - Chemistry & allied sciences
6
615 - Pharmacology & therapeutics
6
720 - Architecture
6
400 - Language
5
414 - Phonology & phonetics
5
297 - Islam, Babism & Bahai Faith
4
350 - Public administration & military science
4
657 - Accounting
4
530 - Physics
3
612 - Human physiology
3
120 - Epistemology, causation & humankind
2
360 - Social problems & services; associations
2
160 - Logic
1
336 - Public finance
1
338 - Production
1
364 - Criminology
1
550 - Earth sciences
1
770 - Photography, photographs & computer art
1
791 - Public performances
1