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TBT: The Acoustic Ear

05.15.2014 | Mary Ellen Eagan |

Acoustic listening devices developed for the Dutch army as part of air defense systems research between World Wars I and II.

About the Author
Mary Ellen Eagan, President & CEO, Chief Executive Officer, Aviation, HMMH

Mary Ellen Eagan

President & CEO

As President, CEO, and Chairman of the Board of Directors of HMMH, Mary Ellen is responsible for providing strategic, innovative leadership…

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