"Programes de ràdio Estats Units d'Amèrica Història 1920-1950." . . "Radio programs United States." . . . . "Radio Émissions États-Unis." . . "Rundfunkprogramm." . . "Rundfunksendung." . . "USA." . . "Catalogs" . "Catalogs"@en . . . "The Big broadcast 1920-1950 : a New, revised, and greatly expanded edition of Radio's Golden Age"@en . . . . . . . "The big broadcast 1920-1950 : a new, revised and greatly expanded edition of Radio's Golden Age, the complete reference work"@en . "The big broadcast, 1920-1950" . "The big broadcast, 1920-1950"@en . . . "The big broadcast,1920-1950 a new,rev.,and greatly expanded ed.of radio's golden age,the complete reference work.Introd.by henry morgan" . . . . . . . . "Verzeichnis" . . "The big broadcast, 1920-1950. A new, rev., and greatly expanded ed. of Radio's golden age, the complete reference work"@en . . . . . . . . . . "The big broadcast, 1920-1950 : the complete reference work"@en . "The Big Broadcast, 1920-1950" . . . "Geschichte 1920-1950." . .