Classification
000 - Computer science, information & general works
363 - Other social problems & services
2
600 - Technology
2
610 - Medicine & health
620 - Engineering & allied operations
2
900 - History & geography
100 - Philosophy & psychology
1
300 - Social sciences
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
370 - Education
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
700 - The arts; fine & decorative arts
1