Classification
000 - Computer science, information & general works
4
140 - Specific philosophical schools
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
330 - Economics
333 - Economics of land & energy
4
340 - Law
1
363 - Other social problems & services
370 - Education
1
380 - Commerce, communications & transportation
3
414 - Phonology & phonetics
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
4
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
5
720 - Architecture
1
900 - History & geography