Stamps commemorating medicine. "Honoria Acosta Sison" pioneer gynecologist and obstetrician.
D006176:Gynecology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D009774:Obstetrics / Q000266:history*; D010678:Philately; D010679:Philippines; D010822:Physicians, Women