Apasiripol, P. (1974). The effect of different rates of nitrogen application on the yield and protein content of Taichung 31 wheat variety [microform]. Photoduplication Service, University of the Philippines Library.
Citace podle Chicago (17th ed.)Apasiripol, Pitaks. The Effect of Different Rates of Nitrogen Application on the Yield and Protein Content of Taichung 31 Wheat Variety [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1974.
Citace podle MLA (9th ed.)Apasiripol, Pitaks. The Effect of Different Rates of Nitrogen Application on the Yield and Protein Content of Taichung 31 Wheat Variety [microform]. Photoduplication Service, University of the Philippines Library, 1974.
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