The school radio-sound system,
by R. R. Lowdermilk ...
Published by the Federal radio education committee with the cooperation of the U. S. Office of education, Federal security agency.

APA Citation

Lowdermilk, R. Redvers., United States. Office of Education., Federal radio education committee. (1941). The school radio-sound system: Published by the Federal radio education committee with the cooperation of the U. S. Office of education, Federal security agency. Washington, D.C..

MLA Citation

Lowdermilk, Ronald Redvers, 1898-, United States. Office of Education, and Federal radio education committee. The School Radio-sound System: Published by the Federal Radio Education Committee With the Cooperation of the U. S. Office of Education, Federal Security Agency. Washington, D.C., 1941.