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ralph u cotter

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Diseases and pestsFactors affecting the development of the aerial stage of Puccinia graminisRalph U. Cotter

Factors affecting the development of the aerial stage of Puccinia graminis

Ralph U. Cotter · U.S. Dept. of Agriculture

38 sayfa · 1932

Barberries / Puccinia graminis / Diseases and pests

CiltUnseasonable germinations of teliospores of Puccinia graminis triticiRalph U. Cotter

Unseasonable germinations of teliospores of Puccinia graminis tritici

Ralph U. Cotter · Yayınevi bilinmiyor

Sayfa sayısı yok · 1940

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CiltPhysiologic specialization in Puccinia graminis secalisRalph U. Cotter, M. N. Levine

Physiologic specialization in Puccinia graminis secalis

Ralph U. Cotter, M. N. Levine · U. S. Government Printing Office

315 sayfa · 1932

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