Classification
320 - Political science
330 - Economics
610 - Medicine & health
363 - Other social problems & services
10
000 - Computer science, information & general works
5
333 - Economics of land & energy
5
700 - The arts; fine & decorative arts
5
630 - Agriculture & related technologies
4
900 - History & geography
4
140 - Specific philosophical schools
3
551 - Geology, hydrology & meteorology
3
370 - Education
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
600 - Technology
2
620 - Engineering & allied operations
2
100 - Philosophy & psychology
1
200 - Religion
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
380 - Commerce, communications & transportation
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
720 - Architecture
1