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Heidhues, Theodor, Hartwig de Haen, Glenn Leroy Johnson, and Stefan Tangermann. Agriculture and International Relations: Analysis and Policy : Essays in Memory of Theodor Heidhues. New York: St. Martin's Press, 1985.

Heidhues, Theodor, et al. Agriculture and International Relations: Analysis and Policy : Essays in Memory of Theodor Heidhues. St. Martin's Press, 1985.