Classification
610 - Medicine & health
97
900 - History & geography
97
100 - Philosophy & psychology
14
320 - Political science
11
300 - Social sciences
10
170 - Ethics
6
200 - Religion
6
600 - Technology
5
361 - Social problems & social welfare in general
4
500 - Natural sciences & mathematics
4
140 - Specific philosophical schools
3
330 - Economics
3
340 - Law
3
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
301 - Sociology & anthropology
2
370 - Education
2
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
333 - Economics of land & energy
1
400 - Language
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
612 - Human physiology
1
770 - Photography, photographs & computer art
1
791 - Public performances
1