Classification
380 - Commerce, communications & transportation
900 - History & geography
34
330 - Economics
30
000 - Computer science, information & general works
27
320 - Political science
27
700 - The arts; fine & decorative arts
23
300 - Social sciences
17
600 - Technology
17
400 - Language
14
140 - Specific philosophical schools
13
620 - Engineering & allied operations
12
791 - Public performances
12
370 - Education
11
410 - Linguistics
11
100 - Philosophy & psychology
10
301 - Sociology & anthropology
9
340 - Law
9
200 - Religion
6
333 - Economics of land & energy
5
170 - Ethics
4
363 - Other social problems & services
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
610 - Medicine & health
3
120 - Epistemology, causation & humankind
2
296 - Judaism
2
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
576 - Genetics & evolution
2
612 - Human physiology
2
630 - Agriculture & related technologies
2
657 - Accounting
2
720 - Architecture
2
780 - Music
2
800 - Literature & rhetoric
2
398 - Folklore
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1