Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
2
330 - Economics
333 - Economics of land & energy
2
370 - Education
2
600 - Technology
700 - The arts; fine & decorative arts
2
300 - Social sciences
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1
900 - History & geography
1