Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
333 - Economics of land & energy
361 - Social problems & social welfare in general
610 - Medicine & health
320 - Political science
2
330 - Economics
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
658 - General management
1