Audiometers--a closer look.
Dondelinger
Robert M
RM
U.S. Military Entrance Processing Command, North Chicago, IL, USA. robert.dondelinger@mepcom.army.mil
D001299:Audiometry / Q000266:history* / Q000295:instrumentation / Q000379:methods*; D019544:Equipment Failure Analysis; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans