Classification
320 - Political science
330 - Economics
363 - Other social problems & services
600 - Technology
610 - Medicine & health
333 - Economics of land & energy
14
370 - Education
10
551 - Geology, hydrology & meteorology
8
700 - The arts; fine & decorative arts
8
304 - Factors affecting social behavior
6
900 - History & geography
6
620 - Engineering & allied operations
5
630 - Agriculture & related technologies
5
000 - Computer science, information & general works
4
380 - Commerce, communications & transportation
4
300 - Social sciences
3
581 - Specific topics in natural history
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
576 - Genetics & evolution
2
658 - General management
2
720 - Architecture
2
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1