title: [200th anniversary of the birth of Frank Isaac Mayor (1779-1855), discoverer of fetal heart sounds].
mesh_terms: D002309:Cardiology / Q000266:history; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006326:Heart Auscultation / Q000266:history; D006347:Heart Sounds / Q000266:history; D049671:History, 18th Century; D049672:History, 19th Century; D006801:Humans; D011247:Pregnancy; D013557:Switzerland
vernacular_title: W dwusetna rocznice urodzin Franciszka Izaaka Mayora (1779-1855) - odkrywcy tonów serca płodu.