Hearing Aids recent history.mov
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32,564 ratings
Views: 2,166
From: parkerstudio
Added: 16 years ago · 3:11 · 480p
Audiologist Lee Parker PhD explains the history of hearing aids since the 1960s, very informative!
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Years
Years
Views: 2,166
From: parkerstudio
Added: 16 years ago · 3:11 · 480p
Audiologist Lee Parker PhD explains the history of hearing aids since the 1960s, very informative!
No comments yet.