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