Classification
363 - Other social problems & services
7
170 - Ethics
5
333 - Economics of land & energy
5
142 - Critical philosophy
4
100 - Philosophy & psychology
3
113 - Cosmology
3
320 - Political science
3
581 - Specific topics in natural history
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
330 - Economics
2
577 - Ecology
2
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
2
900 - History & geography
2
109 - Historical & collected persons treatment
1
111 - Ontology
1
174 - Occupational ethics
1
190 - Modern western philosophy
1
301 - Sociology & anthropology
1
306 - Culture & institutions
1
338 - Production
1
340 - Law
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
501 - Philosophy & theory
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
576 - Genetics & evolution
1
590 - Animals (Zoology)
1
601 - Philosophy & theory
1
621 - Applied physics
1
658 - General management
1
780 - Music
1
791 - Public performances
1
809 - History, description & criticism
1
910 - Geography & travel
1