Zworykin , V.K.. Photoelectricity and its Application / Textual Documents V.K.Zworykin & E.G.Ramberg. - 1st ed. / - New York : John Wiley & Sons , C1949. - xii,494p. : ill ; 23cm . Index Subjects--Index Terms: Photoelectricity G-Physics Dewey Class. No.: 535.2 / Z 99 P