Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers
By: British StandardsInstitution.
Edition: 1st revision.
Series: BS4009. 1975
Publisher: B.S.I.
Published: 1975
Place of publication: London
Language: eng
Subjects: Audiometry.; Hearing aids.; Mastoid process.; Vibrators -- Standards.
Notes: Pierced for binder.