Classification
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
320 - Political science
330 - Economics
2
333 - Economics of land & energy
1
363 - Other social problems & services
370 - Education
1
380 - Commerce, communications & transportation
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
720 - Architecture
900 - History & geography
1