Classification
900 - History & geography
62
100 - Philosophy & psychology
36
700 - The arts; fine & decorative arts
32
300 - Social sciences
29
320 - Political science
21
200 - Religion
20
800 - Literature & rhetoric
20
370 - Education
15
140 - Specific philosophical schools
14
301 - Sociology & anthropology
14
340 - Law
12
600 - Technology
12
000 - Computer science, information & general works
10
330 - Economics
8
363 - Other social problems & services
8
400 - Language
8
610 - Medicine & health
8
380 - Commerce, communications & transportation
7
410 - Linguistics
7
620 - Engineering & allied operations
7
780 - Music
7
170 - Ethics
6
297 - Islam, Babism & Bahai Faith
6
304 - Factors affecting social behavior
5
333 - Economics of land & energy
5
581 - Specific topics in natural history
5
120 - Epistemology, causation & humankind
4
551 - Geology, hydrology & meteorology
4
296 - Judaism
3
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
720 - Architecture
2
160 - Logic
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
414 - Phonology & phonetics
1
530 - Physics
1
770 - Photography, photographs & computer art
1
791 - Public performances
1