Classification
000 - Computer science, information & general works
4
100 - Philosophy & psychology
2
140 - Specific philosophical schools
5
170 - Ethics
2
300 - Social sciences
2
320 - Political science
5
330 - Economics
7
333 - Economics of land & energy
10
340 - Law
2
363 - Other social problems & services
10
370 - Education
5
380 - Commerce, communications & transportation
8
500 - Natural sciences & mathematics
2
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
5
576 - Genetics & evolution
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
1
600 - Technology
7
610 - Medicine & health
612 - Human physiology
1
620 - Engineering & allied operations
5
630 - Agriculture & related technologies
2
657 - Accounting
2
700 - The arts; fine & decorative arts
9
720 - Architecture
780 - Music
1
800 - Literature & rhetoric
2
900 - History & geography
6