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• Hearing Aids - Mechanical

  • Uploaded by: National Library of Medicine
  • License: No known copyright restrictions
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  • 1,751 views
  • Date uploaded: 2021-09-24
  • Tags: hardofhearing, hearingloss, hearingimpairment, deaf, unabletohear, “printsandphotographs”, pp, nationallibraryofmedicine, nlm, imagesfromthehistoryofmedicine, ihm, historyofmedicinedivision, hmd, “nationalinstitutesofhealth”, nih, hearingaids, mechanical, eardrum, woodengraving, hearingaid, ear, deafness, hearingaide, stillimage, publicdomain, archivesofmedicine, nlmdigitalcollection
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