Estimer la longueur du tuyau.
Estimate the length of the pipe (sound on)#iteachphysics pic.twitter.com/4jjkUfadkj — Matthew Blackman (@UniverseAndMore) September 29, 2020
Estimate the length of the pipe (sound on)#iteachphysics pic.twitter.com/4jjkUfadkj
livre de troisième
