Jesena, C. C. (1977). Hybrid vigor in F1 varietal crosses from local and introduced corn varieties [microform]. Photoduplication Service. University of the Philippines Library.
Citace podle Chicago (17th ed.)Jesena, Cesar C. Hybrid Vigor in F1 Varietal Crosses from Local and Introduced Corn Varieties [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Citace podle MLA (9th ed.)Jesena, Cesar C. Hybrid Vigor in F1 Varietal Crosses from Local and Introduced Corn Varieties [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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