Classification
000 - Computer science, information & general works
2
300 - Social sciences
2
320 - Political science
2
530 - Physics
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
100 - Philosophy & psychology
1
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
780 - Music
1
900 - History & geography
1