Classification
333 - Economics of land & energy
7
540 - Chemistry & allied sciences
600 - Technology
630 - Agriculture & related technologies
363 - Other social problems & services
6
620 - Engineering & allied operations
6
551 - Geology, hydrology & meteorology
4
000 - Computer science, information & general works
3
330 - Economics
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
300 - Social sciences
2
320 - Political science
2
100 - Philosophy & psychology
1
301 - Sociology & anthropology
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
612 - Human physiology
1
657 - Accounting
1