Sir Ram Nath Chopra (1882-1973). Postal stamps released on Sir Ram Nath Chopra, India and Sarpagandha, India--1997.
Dashatwar
Parag D
PD
TN Medical College & BYL Nair Ch Hospital, Mumbai.
D049673:History, 20th Century; D006801:Humans; D007194:India; D010601:Pharmacology, Clinical / Q000266:history*; D010678:Philately; D008517:Phytotherapy / Q000266:history*