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National Research Council (U.S.). Committee on Scientific Aids to Learning.

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Broadcast receivers and phonographs for classroom use.

by National Research Council (U.S.). Commit... First published in 1939 — 1 edition

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Central sound systems for schools.

by National Research Council (U.S.). Commit... First published in 1940 — 1 edition

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Sound recording equipment for schools.

by National Research Council (U.S.). Commit... First published in 1940 — 1 edition

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School recording technique.

by National Research Council (U.S.). Commit... First published in 1941 — 1 edition

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OLID: OL2345448A

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Created April 1, 2008
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