Westcott, Charles G. Tape recorders : how they work / by Charles G. Westcott and Richard F. Dubbe. - New enl. ed. rev. / by Howard W. Sams editorical staff. New enl. ed. rev. / by Howard W. Sams editorical staff. - Slough : Bucks, Foulsham, [1964] Subjects--Topical Terms: Magnetic recorders and recording.