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Barkley, Andrew, Barkley, Paul W.. (2015). Depolarizing food and agriculture : an economic approach . New York: Routledge.

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Barkley, Andrew, Barkley, Paul W.. Depolarizing food and agriculture : an economic approach. New York: Routledge, 2015. Text.

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Barkley, Andrew, Barkley, Paul W.. Depolarizing food and agriculture : an economic approach. New York: Routledge, 2015. Text.

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Barkley, Andrew, Barkley, Paul W.. Depolarizing food and agriculture : an economic approach. New York: Routledge, 2015. Print.