Classification
100 - Philosophy & psychology
380 - Commerce, communications & transportation
610 - Medicine & health
700 - The arts; fine & decorative arts
333 - Economics of land & energy
3
000 - Computer science, information & general works
2
370 - Education
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
1
400 - Language
1
600 - Technology
1