Classification
330 - Economics
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
900 - History & geography
1