Classification
330 - Economics
361 - Social problems & social welfare in general
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
600 - Technology
2
320 - Political science
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
612 - Human physiology
1
658 - General management
1
700 - The arts; fine & decorative arts
1