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MLA

Smith, Paul G, and J.C Walker. "Certain Environal and Nutritional Factors Affecting Aphanomyces Root Rot of Garden Pea." , 1-20.. Print

APA

Smith, P. G, & Walker, J. (0000). Certain Environal and Nutritional Factors Affecting Aphanomyces Root Rot of Garden Pea.

Chicago

Smith, Paul G., and J.C Walker. "Certain Environal and Nutritional Factors Affecting Aphanomyces Root Rot of Garden Pea" (1941): 1-20..