Medical philately (medical personalities on stamps).
Pai-Dhungat
J V
JV
apaidhungat@hotmail.com
D001604:Berlin; D005859:Germany, East; D049672:History, 19th Century; D006801:Humans; D006814:Hungary; D010338:Pathology, Clinical / Q000266:history; D010678:Philately / Q000266:history