Audiovisual materials : their nature and use /
Wittich, Walter Arno, 1910-
Audiovisual materials : their nature and use / by Walter Arno Wittich - 4th ed. - New York : Harper & Row, 1967 - 554 p.: ill.; 27 cm.
Audio-visual education
Audiovisual materials : their nature and use / by Walter Arno Wittich - 4th ed. - New York : Harper & Row, 1967 - 554 p.: ill.; 27 cm.
Audio-visual education
