Classification
000 - Computer science, information & general works
5
320 - Political science
330 - Economics
530 - Physics
700 - The arts; fine & decorative arts
333 - Economics of land & energy
4
600 - Technology
3
620 - Engineering & allied operations
3
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
900 - History & geography
2
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
340 - Law
1
370 - Education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
657 - Accounting
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
780 - Music
1
800 - Literature & rhetoric
1