Classification
363 - Other social problems & services
600 - Technology
620 - Engineering & allied operations
13
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
900 - History & geography
333 - Economics of land & energy
6
580 - Plants (Botany)
6
610 - Medicine & health
5
300 - Social sciences
4
720 - Architecture
4
140 - Specific philosophical schools
3
581 - Specific topics in natural history
3
170 - Ethics
2
301 - Sociology & anthropology
2
320 - Political science
2
330 - Economics
2
340 - Law
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
770 - Photography, photographs & computer art
1