Freyfogle, E. T. (2006). Why conservation is failing and how it can regain ground. Yale University Press.
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Chicago Style (17th ed.) Zitazioa
Freyfogle, Eric T. Why Conservation Is Failing and How It Can Regain Ground. New Haven: Yale University Press, 2006.
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MLA (9th ed.) Zitazioa
Freyfogle, Eric T. Why Conservation Is Failing and How It Can Regain Ground. Yale University Press, 2006.
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