quthhale raarude voted up HappyTo BeHereTo's answer 3/21/2016 how does a stethoscope work? Or you can look here:http://science.howstuffworks.com/innovation/everyday-innovations/stethoscopes.htm
quthhale raarude voted up HappyTo BeHereTo's answer 3/21/2016 how does a stethoscope work? Or you can look here:http://science.howstuffworks.com/innovation/everyday-innovations/stethoscopes.htm