Classification
330 - Economics
340 - Law
370 - Education
320 - Political science
4
140 - Specific philosophical schools
3
363 - Other social problems & services
3
300 - Social sciences
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
200 - Religion
1
333 - Economics of land & energy
1
364 - Criminology
1
400 - Language
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1