Classification
300 - Social sciences
900 - History & geography
207
320 - Political science
131
301 - Sociology & anthropology
119
700 - The arts; fine & decorative arts
46
140 - Specific philosophical schools
42
330 - Economics
38
304 - Factors affecting social behavior
35
100 - Philosophy & psychology
33
200 - Religion
31
333 - Economics of land & energy
30
370 - Education
28
600 - Technology
28
340 - Law
25
610 - Medicine & health
24
380 - Commerce, communications & transportation
19
363 - Other social problems & services
18
364 - Criminology
18
800 - Literature & rhetoric
18
620 - Engineering & allied operations
16
630 - Agriculture & related technologies
13
350 - Public administration & military science
11
400 - Language
11
361 - Social problems & social welfare in general
9
297 - Islam, Babism & Bahai Faith
8
170 - Ethics
7
720 - Architecture
7
360 - Social problems & services; associations
5
410 - Linguistics
5
551 - Geology, hydrology & meteorology
5
296 - Judaism
4
780 - Music
4
120 - Epistemology, causation & humankind
3
520 - Astronomy & allied sciences
3
581 - Specific topics in natural history
3
000 - Computer science, information & general works
2
530 - Physics
2
398 - Folklore
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
920 - Biography, genealogy & insignia
1