Classification
320 - Political science
330 - Economics
5
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
380 - Commerce, communications & transportation
2
600 - Technology
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
370 - Education
1
520 - Astronomy & allied sciences
1
576 - Genetics & evolution
1
610 - Medicine & health
1