Classification
658 - General management
330 - Economics
10
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
900 - History & geography
3
100 - Philosophy & psychology
2
333 - Economics of land & energy
2
600 - Technology
2
140 - Specific philosophical schools
1
170 - Ethics
1
301 - Sociology & anthropology
1
370 - Education
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1