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MLA

Hannan, R.M. "Phaseolus Germplasm Conservation for the Usda, Ars, National Plant Germplasm System." , 190-192.. Print

APA

Hannan, R. (0000). Phaseolus germplasm conservation for the USDA, ARS, National Plant Germplasm System.

Chicago

Hannan, R.M. "Phaseolus germplasm conservation for the USDA, ARS, National Plant Germplasm System" (1996): 190-192..