Classification
320 - Political science
330 - Economics
5
380 - Commerce, communications & transportation
333 - Economics of land & energy
4
000 - Computer science, information & general works
3
576 - Genetics & evolution
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
400 - Language
1
500 - Natural sciences & mathematics
1
530 - Physics
1
581 - Specific topics in natural history
1
610 - Medicine & health
1