Incertidumbre   Creator:   Curiel, Gonzalo ( composer ) Ríos, Elvira ( performer ) Orquesta José Morand ( performer ) Publisher.Display:   Odeon Format:   1 sound disc : 78 rpm ; 10 in. Subjects.Display:   bolero-canción Source Institution:   Florida International University Incertidumbre	Volverás   Creator:   Lara, Agustín ( composer ) Ríos, Elvira ( performer ) Morand, José ( performer ) Orquesta José Morand ( performer ) Publisher.Display:   Odeon Format:   1 sound disc : 78 rpm ; 10 in. Subjects.Display:   bolero-canción Source Institution:   Florida International University Volverás