Classification
100 - Philosophy & psychology
363 - Other social problems & services
530 - Physics
140 - Specific philosophical schools
2
170 - Ethics
2
200 - Religion
2
581 - Specific topics in natural history
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
300 - Social sciences
1
301 - Sociology & anthropology
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
610 - Medicine & health
1
900 - History & geography
1