Results of co-operative hybrid maize tests in European and Mediterranea countries, 1950 a progress report - Rome : FAO, 1952 - 43 p. - FAO. Cuadernos de fomento ; 31 . - FAO. Cuadernos de fomento ; 31 . LCCN: 46852 Subjects--Topical Terms: Maíz--Híbridos. Dewey Class. No.: 633.15 / F3