Classification
000 - Computer science, information & general works
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
400 - Language
600 - Technology
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
320 - Political science
1
330 - Economics
1
363 - Other social problems & services
1
610 - Medicine & health
1
720 - Architecture
1