Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
330 - Economics
610 - Medicine & health
333 - Economics of land & energy
2
363 - Other social problems & services
2
580 - Plants (Botany)
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
780 - Music
2
300 - Social sciences
1
320 - Political science
1
370 - Education
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1