Central sound systems for schools.
Contributors: Hall, William Mott.; Reed, Paul C.
Publisher: Committee on scientific aids to learning
Published: 1940
Place of publication: New York
Language: eng
Number of pages: 69
Subjects: Sound -- Recording and reproducing.; Radio in education.; Sound recordings in education.; Schools -- Furniture, equipment, etc.
Other titles: Sound systems for schools.
Notes: "All of the report, with the exception of the first chapter, was written by Professor W. M. Hall of Massachusetts institute of technology.  The first chapter was written by Mr. Paul C. Reed."--Foreword.