Classification
615 - Pharmacology & therapeutics
610 - Medicine & health
3
140 - Specific philosophical schools
2
580 - Plants (Botany)
2
700 - The arts; fine & decorative arts
2
330 - Economics
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
600 - Technology
1
620 - Engineering & allied operations
1
900 - History & geography
1