Classification
333 - Economics of land & energy
600 - Technology
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
363 - Other social problems & services
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1