McKown, Harry C. 1892-1963.
Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts... - 1st ed. - New York : McGraw-Hill book company, inc., 1940. - xiv, 385 p. : illus. (incl. maps) 24 cm. - McGraw-Hill series in education, Harold Benjamin, consulting editor. .
"Selected references" at end of each chapter except chapter III. "Sources of materials and equipment": p. 365-375.
40027795
Audio-visual education.
LB1043 / .M3 1940
371.33 / MCA
Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts... - 1st ed. - New York : McGraw-Hill book company, inc., 1940. - xiv, 385 p. : illus. (incl. maps) 24 cm. - McGraw-Hill series in education, Harold Benjamin, consulting editor. .
"Selected references" at end of each chapter except chapter III. "Sources of materials and equipment": p. 365-375.
40027795
Audio-visual education.
LB1043 / .M3 1940
371.33 / MCA