[Factory control of the quality of rigid membrane phonendoscopes].
D001314:Auscultation / Q000295:instrumentation* / Q000592:standards; D019723:Endoscopes; D008567:Membranes, Artificial
D008567:Membranes, Artificial
Zavodskoĭ kontrol' kachestva fonendoskopov s zhestkoĭ membranoĭ.