Nelson, G., Campbell, S., & Wozniak, P. R. (2002). Beyond Earth Day: Fulfilling the promise. University of Wisconsin Press.
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Tohutoru Kātū Chicago (17th ed.)
Nelson, Gaylord, Susan Campbell, me Paul R. Wozniak. Beyond Earth Day: Fulfilling the Promise. Madison: University of Wisconsin Press, 2002.
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Tohutoro MLA (9th ed.)
Nelson, Gaylord, et al. Beyond Earth Day: Fulfilling the Promise. University of Wisconsin Press, 2002.
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