“ACKNOWLEDGMENTS.” A History of Environmental Politics Since 1945, by SAMUEL P. HAYS, University of Pittsburgh Press, Pittsburgh, Pa., 2000, pp. ix-xii, www.jstor.org/stable/j.ctt6wrcjm.3. Accessed 9 July 2020.
HAYS, S. (2000). ACKNOWLEDGMENTS. In A History of Environmental Politics Since 1945 (pp. Ix-Xii). Pittsburgh, Pa.: University of Pittsburgh Press. Retrieved July 9, 2020, from www.jstor.org/stable/j.ctt6wrcjm.3
HAYS, SAMUEL P. "ACKNOWLEDGMENTS." In A History of Environmental Politics Since 1945, Ix-Xii. Pittsburgh, Pa.: University of Pittsburgh Press, 2000. Accessed July 9, 2020. www.jstor.org/stable/j.ctt6wrcjm.3.
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