31 déc. 1815 - Stethoscope
Description:
René Laënnec, a French physician, invented the stethoscope, a trumpet-shaped wooden tube, to examine an obese woman whose heart he could not hear by pressing his ear to her chestAjouté au bande de temps:
Date:
31 déc. 1815
Maintenaint
~ Il y a 208 ans
