Conventional hearing aids
Subtitle: an overview.
Publisher: Alexander Graham Bell Association for the Deaf
Published: 1971
Place of publication: Washington, D.C
Language: eng
Notes: Reprint no. 953.

"This paper was presented at the Conference on Sensory Aids for the Hearing Handicapped organized by the National Academy of Engineering, held on November 15-17 1970 at Easton, Maryland".