00714nam0-22002651i-450-99000349048040332120100119192830.0000349048FED01000349048(Aleph)000349048FED0100034904820030910d1950----km-y0itay50------baengUSy-------001yyAmerica’s crop heritageNelson KolseAmes, IowaIowa State College Press1950Klose,Nelson134682ITUNINARICAUNIMARCBK990003490480403321SE 016.05.06-02211DECSEDECSEAmerica’s crop heritage496401UNINA