Classification
330 - Economics
2
350 - Public administration & military science
363 - Other social problems & services
600 - Technology
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
1
300 - Social sciences
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
612 - Human physiology
1
620 - Engineering & allied operations
1