Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
333 - Economics of land & energy
2
581 - Specific topics in natural history
600 - Technology
658 - General management
370 - Education
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1