Classification
300 - Social sciences
320 - Political science
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
551 - Geology, hydrology & meteorology
140 - Specific philosophical schools
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
340 - Law
1
350 - Public administration & military science
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1