Classification
551 - Geology, hydrology & meteorology
700 - The arts; fine & decorative arts
330 - Economics
4
333 - Economics of land & energy
4
363 - Other social problems & services
4
900 - History & geography
4
000 - Computer science, information & general works
3
600 - Technology
3
320 - Political science
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
380 - Commerce, communications & transportation
1
550 - Earth sciences
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
720 - Architecture
1