Classification
170 - Ethics
301 - Sociology & anthropology
140 - Specific philosophical schools
17
100 - Philosophy & psychology
15
320 - Political science
10
300 - Social sciences
9
900 - History & geography
9
200 - Religion
7
340 - Law
6
700 - The arts; fine & decorative arts
6
370 - Education
5
610 - Medicine & health
5
330 - Economics
4
333 - Economics of land & energy
4
600 - Technology
4
581 - Specific topics in natural history
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
230 - Christianity & Christian theology
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
363 - Other social problems & services
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
576 - Genetics & evolution
1
770 - Photography, photographs & computer art
1