Classification
320 - Political science
700 - The arts; fine & decorative arts
330 - Economics
91
900 - History & geography
63
333 - Economics of land & energy
43
363 - Other social problems & services
42
000 - Computer science, information & general works
33
140 - Specific philosophical schools
23
300 - Social sciences
23
610 - Medicine & health
21
551 - Geology, hydrology & meteorology
18
600 - Technology
18
340 - Law
17
380 - Commerce, communications & transportation
15
100 - Philosophy & psychology
13
200 - Religion
12
304 - Factors affecting social behavior
12
370 - Education
12
800 - Literature & rhetoric
11
581 - Specific topics in natural history
9
630 - Agriculture & related technologies
9
720 - Architecture
9
400 - Language
8
410 - Linguistics
6
576 - Genetics & evolution
6
301 - Sociology & anthropology
5
580 - Plants (Botany)
5
170 - Ethics
4
297 - Islam, Babism & Bahai Faith
4
361 - Social problems & social welfare in general
4
770 - Photography, photographs & computer art
4
360 - Social problems & services; associations
3
620 - Engineering & allied operations
3
780 - Music
3
520 - Astronomy & allied sciences
2
550 - Earth sciences
2
120 - Epistemology, causation & humankind
1
302 - Social interaction
1
350 - Public administration & military science
1
398 - Folklore
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
658 - General management
1
791 - Public performances
1