Classification
610 - Medicine & health
29
330 - Economics
4
370 - Education
4
170 - Ethics
3
616 - Diseases
3
340 - Law
2
612 - Human physiology
2
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
600 - Technology
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1