Hearing instruments [electronic resource]. - [New York, Harcourt Brace Jovanovich, Inc.] - Monthly - v. 24, no. 8- Aug. 1973- Ceased with June 1996 issue. Periodical ISSN: 0092-4466 Subjects--Topical Terms: Hearing aids--Periodicals.Hearing Aids--Periodicals. LC Class. No.: RF310 / .H43 National Library of Medicine Call No.: W1 / HE6415I