Auditory aids in the class room
Subtitle: a report on the cost of providing auditory aids by broadcasting, by wire lines and by records
By: prepared for the Committee by John V. L. Hogan and R. M. Wilmotte.
Contributors: Wilmotte, Raymond Maurice, 1901- joint author.; National Research Council (U.S.). Committee on Scientific Aids to Learning.
Publisher: Committee on scientific aids to learning
Published: 1938
Place of publication: New York
Language: eng
Number of pages: 66
Subjects: Radio in education.; Sound recordings in education.