Classification
000 - Computer science, information & general works
3
120 - Epistemology, causation & humankind
1
200 - Religion
1
300 - Social sciences
301 - Sociology & anthropology
1
320 - Political science
3
330 - Economics
4
333 - Economics of land & energy
6
340 - Law
1
363 - Other social problems & services
5
370 - Education
3
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
2
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
3
600 - Technology
3
610 - Medicine & health
2
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
2
900 - History & geography
2