Classification
320 - Political science
551 - Geology, hydrology & meteorology
581 - Specific topics in natural history
900 - History & geography
330 - Economics
4
363 - Other social problems & services
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
700 - The arts; fine & decorative arts
3
300 - Social sciences
1
370 - Education
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1