Classification
900 - History & geography
997
320 - Political science
125
300 - Social sciences
103
200 - Religion
100
700 - The arts; fine & decorative arts
81
800 - Literature & rhetoric
70
330 - Economics
59
100 - Philosophy & psychology
51
000 - Computer science, information & general works
40
340 - Law
38
140 - Specific philosophical schools
31
380 - Commerce, communications & transportation
27
400 - Language
26
333 - Economics of land & energy
23
576 - Genetics & evolution
23
610 - Medicine & health
23
301 - Sociology & anthropology
22
304 - Factors affecting social behavior
21
370 - Education
20
297 - Islam, Babism & Bahai Faith
18
410 - Linguistics
16
780 - Music
11
363 - Other social problems & services
10
600 - Technology
9
720 - Architecture
9
361 - Social problems & social welfare in general
6
500 - Natural sciences & mathematics
6
791 - Public performances
6
364 - Criminology
5
398 - Folklore
5
296 - Judaism
4
360 - Social problems & services; associations
4
630 - Agriculture & related technologies
3
920 - Biography, genealogy & insignia
3
120 - Epistemology, causation & humankind
2
336 - Public finance
2
620 - Engineering & allied operations
2
170 - Ethics
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
658 - General management
1