Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
340 - Law
363 - Other social problems & services
333 - Economics of land & energy
3
700 - The arts; fine & decorative arts
3
300 - Social sciences
2
320 - Political science
2
380 - Commerce, communications & transportation
2
400 - Language
2
600 - Technology
2
900 - History & geography
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
620 - Engineering & allied operations
1