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MLA

Steinmetz, F.H, and A.C Arny. "A Classification of the Varieties of Field Beans, Phaseolus Vulgaris." , 1-50.. Print

APA

Steinmetz, F., & Arny, A. (0000). A Classification of the Varieties of Field Beans, Phaseolus vulgaris.

Chicago

Steinmetz, F.H., and A.C Arny. "A Classification of the Varieties of Field Beans, Phaseolus vulgaris" (1932): 1-50..