“ENVIRONMENTAL PERSPECTIVE.” A History of Environmental Politics Since 1945, by SAMUEL P. HAYS, University of Pittsburgh Press, Pittsburgh, Pa., 2000, pp. 214–227, www.jstor.org/stable/j.ctt6wrcjm.19. Accessed 4 July 2020.
HAYS, S. (2000). ENVIRONMENTAL PERSPECTIVE. In A History of Environmental Politics Since 1945 (pp. 214-227). Pittsburgh, Pa.: University of Pittsburgh Press. Retrieved July 4, 2020, from www.jstor.org/stable/j.ctt6wrcjm.19
HAYS, SAMUEL P. "ENVIRONMENTAL PERSPECTIVE." In A History of Environmental Politics Since 1945, 214-27. Pittsburgh, Pa.: University of Pittsburgh Press, 2000. Accessed July 4, 2020. www.jstor.org/stable/j.ctt6wrcjm.19.
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