How to use audio-visual materials.
Bachman, John Walter.
How to use audio-visual materials. - New York : Association Press, c[1956] - 60 p. ; 20 cm. - A Leadership library book .
56006453
Audio-visual education.
LB1043 / .B33
How to use audio-visual materials. - New York : Association Press, c[1956] - 60 p. ; 20 cm. - A Leadership library book .
56006453
Audio-visual education.
LB1043 / .B33