Audio-visual materials :
Wittich, Walter Arno.
Audio-visual materials : their nature and use - Harper and Brothers. c1953. - xx, 564 p.: il. xx, 564 p.: il. 24 cm.
Bibl., apéndice; índice.
MEDIOS AUDIOVISUALES.
371.335
Audio-visual materials : their nature and use - Harper and Brothers. c1953. - xx, 564 p.: il. xx, 564 p.: il. 24 cm.
Bibl., apéndice; índice.
MEDIOS AUDIOVISUALES.
371.335