Finn, James D. The audio-visual equipment manual / - New York : Dryden Press ; [1957] - 363 p. illus. 21 x 30 cm. LCCN: 57009171 Subjects--Topical Terms: Audio-visual equipment. LC Class. No.: TS2301.A7 / F5 Dewey Class. No.: 371.335 / FIA 1957