Classification
000 - Computer science, information & general works
320 - Political science
361 - Social problems & social welfare in general
333 - Economics of land & energy
5
363 - Other social problems & services
5
140 - Specific philosophical schools
4
330 - Economics
4
380 - Commerce, communications & transportation
4
700 - The arts; fine & decorative arts
4
600 - Technology
3
610 - Medicine & health
3
200 - Religion
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
340 - Law
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
650 - Management & auxiliary services
1
658 - General management
1