Amor sincero   Creator:   Alejandro, Fernando ( performer ) Alberio, Juan R. ( composer ) Publisher.Display:   Reyton Format:   1 sound disc : 78 rpm ; 10 in. Subjects.Display:   bolero-tango Source Institution:   Florida International University Amor sincero	Me estoy acostumbrando   Creator:   Los Panchos ( performer ) Alberio, Juan R. ( composer ) Publisher.Display:   Columbia ( Mexico ; ) Format:   1 sound disc : 78 rpm ; 10 in. Subjects.Display:   bolero Source Institution:   Florida International University Me estoy acostumbrando