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MLA

McCall, A.G, and A.M Smith. "Effect of Manure-sulphur Composts Upon the Availability of the Potassium of Greensand." , 239-256.. Print

APA

McCall, A., & Smith, A. (0000). Effect of Manure-Sulphur Composts upon the Availability of the Potassium of Greensand.

Chicago

McCall, A.G., and A.M Smith. "Effect of Manure-Sulphur Composts upon the Availability of the Potassium of Greensand" (1920): 239-256..