Classification
320 - Political science
880
330 - Economics
860
900 - History & geography
189
340 - Law
134
300 - Social sciences
62
800 - Literature & rhetoric
30
700 - The arts; fine & decorative arts
23
576 - Genetics & evolution
18
610 - Medicine & health
18
350 - Public administration & military science
17
400 - Language
15
304 - Factors affecting social behavior
13
410 - Linguistics
12
780 - Music
11
200 - Religion
10
301 - Sociology & anthropology
10
370 - Education
9
100 - Philosophy & psychology
8
500 - Natural sciences & mathematics
6
630 - Agriculture & related technologies
6
430 - Germanic languages; German
5
820 - English & Old English literatures
4
170 - Ethics
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
720 - Architecture
3
000 - Computer science, information & general works
2
581 - Specific topics in natural history
2
616 - Diseases
2
959 - Southeast Asia
2
070 - News media, journalism & publishing
1
121 - Epistemology
1
140 - Specific philosophical schools
1
230 - Christianity & Christian theology
1
240 - Christian moral & devotional theology
1
280 - Christian denominations & sects
1
282 - Roman Catholic Church
1
323 - Civil & political rights
1
333 - Economics of land & energy
1
336 - Public finance
1
345 - Criminal law
1
371 - Schools & their activities; special education
1
378 - Higher education
1
414 - Phonology & phonetics
1
420 - English & Old English
1
428 - Standard English usage
1
580 - Plants (Botany)
1
600 - Technology
1
612 - Human physiology
1
617 - Surgery & related medical specialties
1
more ...