Classification
000 - Computer science, information & general works
1
140 - Specific philosophical schools
320 - Political science
1
330 - Economics
333 - Economics of land & energy
1
361 - Social problems & social welfare in general
363 - Other social problems & services
600 - Technology
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts