Classification
140 - Specific philosophical schools
900 - History & geography
16
800 - Literature & rhetoric
9
700 - The arts; fine & decorative arts
8
100 - Philosophy & psychology
6
300 - Social sciences
6
320 - Political science
5
400 - Language
4
410 - Linguistics
4
301 - Sociology & anthropology
3
576 - Genetics & evolution
3
200 - Religion
2
330 - Economics
2
333 - Economics of land & energy
2
340 - Law
2
370 - Education
2
380 - Commerce, communications & transportation
2
600 - Technology
2
000 - Computer science, information & general works
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
780 - Music
1