Classification
370 - Education
900 - History & geography
100 - Philosophy & psychology
15
320 - Political science
11
200 - Religion
10
333 - Economics of land & energy
10
300 - Social sciences
9
700 - The arts; fine & decorative arts
9
800 - Literature & rhetoric
8
400 - Language
7
140 - Specific philosophical schools
4
610 - Medicine & health
4
330 - Economics
3
340 - Law
3
363 - Other social problems & services
3
600 - Technology
3
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
380 - Commerce, communications & transportation
2
410 - Linguistics
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1