Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
363 - Other social problems & services
600 - Technology
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
900 - History & geography
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
301 - Sociology & anthropology
1
320 - Political science
1
330 - Economics
1
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
720 - Architecture
1
800 - Literature & rhetoric
1