Ear-protector ratings
By: Jerry V. Tobias, F. Michael Irons ; prepared for Department of Transportation, Federal Aviation Administration, Office of Aviation Medicine.
Contributors: Irons, F. Michael.; United States. Office of Aviation Medicine.; Civil Aeromedical Institute.
Series: FAA-AM -- 73-20.; FAA-AM (United States. Office of Aviation Medicine) -- 73-20.
Publisher: The Office; National Technical Information Service [distributor
Published: 1973
Place of publication: Washington, D.C; Springfield, Va
Language: eng
Number of pages: 13
Subjects: Ear -- Protection -- Testing.; Deafness, Noise induced -- Prevention.
Notes: Cover title.

"FAA Civil Aeromedical Institute."

"December 1973."

Bibliography: p. 13.

Also available online.