Crowhurst, Norman H. Basic audio. [electronic resource] . — New York, : J.F. Rider, [1959]. — 3 v. : illus. 23 cm. — (A Rider publication,) no. 201-1--201-3. LCCN: 58013425 Subjects--Topical Terms: Electro-acoustics.Electronics.Sound. LC Class. No.: TK5981 / .C77 Dewey Class. No.: 621.3819