Classification
140 - Specific philosophical schools
330 - Economics
361 - Social problems & social welfare in general
320 - Political science
2
333 - Economics of land & energy
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
500 - Natural sciences & mathematics
1
600 - Technology
1
610 - Medicine & health
1
658 - General management
1
700 - The arts; fine & decorative arts
1