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References
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Dale Edgar
—Audio-Visual Methods in Teaching. Dryden Press , New York . 1954 .
2.
Silverstone David M.
—“Anything Goes in Audio-Visual Education,” Audio-Visual Communication Review. September, 1954 .
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4.Instructional Film Research (Rapid Mass Learning), 1918 –1950. U.S. Navy Special Devices Center , Port Washington, L. I., New York .
