Classification
900 - History & geography
96
320 - Political science
69
300 - Social sciences
45
330 - Economics
34
100 - Philosophy & psychology
29
800 - Literature & rhetoric
29
340 - Law
25
700 - The arts; fine & decorative arts
22
333 - Economics of land & energy
20
200 - Religion
18
600 - Technology
18
370 - Education
17
301 - Sociology & anthropology
14
380 - Commerce, communications & transportation
14
140 - Specific philosophical schools
13
000 - Computer science, information & general works
10
610 - Medicine & health
10
363 - Other social problems & services
9
410 - Linguistics
9
304 - Factors affecting social behavior
8
364 - Criminology
8
297 - Islam, Babism & Bahai Faith
7
170 - Ethics
6
361 - Social problems & social welfare in general
6
400 - Language
5
551 - Geology, hydrology & meteorology
5
576 - Genetics & evolution
5
350 - Public administration & military science
4
360 - Social problems & services; associations
4
620 - Engineering & allied operations
3
720 - Architecture
3
120 - Epistemology, causation & humankind
2
296 - Judaism
2
500 - Natural sciences & mathematics
2
581 - Specific topics in natural history
2
160 - Logic
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
630 - Agriculture & related technologies
1
791 - Public performances
1