Classification
100 - Philosophy & psychology
300 - Social sciences
340 - Law
900 - History & geography
320 - Political science
24
170 - Ethics
6
370 - Education
6
140 - Specific philosophical schools
5
301 - Sociology & anthropology
4
330 - Economics
4
700 - The arts; fine & decorative arts
4
200 - Religion
3
364 - Criminology
3
600 - Technology
3
610 - Medicine & health
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
658 - General management
1
770 - Photography, photographs & computer art
1