Classification
100 - Philosophy & psychology
333 - Economics of land & energy
576 - Genetics & evolution
610 - Medicine & health
3
380 - Commerce, communications & transportation
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
170 - Ethics
1
615 - Pharmacology & therapeutics
1