Audio-visual aids to instruction /
McKown, Harry C. 1892-1963.
Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts.. - 2d ed. - New York and : London : McGraw-Hill book company, inc, 1949 - xvi, 608 p. : ill. ; 24cm - McGraw-Hill series in education, Harold Benjamin, consulting editor . - 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.579-595
Audio-visual education
371.33 / MCA 1949
Audio-visual aids to instruction / by Harry C. McKown...and Alvin B. Roberts.. - 2d ed. - New York and : London : McGraw-Hill book company, inc, 1949 - xvi, 608 p. : ill. ; 24cm - McGraw-Hill series in education, Harold Benjamin, consulting editor . - 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.579-595
Audio-visual education
371.33 / MCA 1949