Ball VE and RF Nehring (1994). “Incorporating Undesirable Outputs into Models of Production: An Application to US Agriculture.” Cahiers d’Economie et Sociologie Rurales 31: 60-74.

Ball VE and RF Nehring (1994). “Incorporating Undesirable Outputs into Models of Production: An Application to US Agriculture.” Cahiers d’Economie et Sociologie Rurales 31: 60-74.

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