New hearing aid features world's tiniest receiver — offers widest frequency range, more overtones

• Book ID: 115036797
• Publisher: John Wiley and Sons
• Year: 1950
• Tongue: English
• Weight: 78 KB
• Volume: 60
• Category: Article
• ISSN: 0023-852X
• DOI: 10.1288/00005537-195010000-00005.n