Classification
000 - Computer science, information & general works
330 - Economics
3
333 - Economics of land & energy
340 - Law
140 - Specific philosophical schools
2
320 - Political science
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
600 - Technology
1
900 - History & geography
1