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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 abr 1819 año - René Laënnec invents the stethoscope.
Descripción:
this lets people hear the beats of tour heart
Añadido al timeline:
inventions
By
sam
17 oct 2017
0
0
800
fecha:
1 abr 1819 año
Ahora mismo
~ 206 years ago
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