Classification
000 - Computer science, information & general works
300 - Social sciences
530 - Physics
320 - Political science
3
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
2
370 - Education
2
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
900 - History & geography
2
140 - Specific philosophical schools
1
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
658 - General management
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
780 - Music
1