Enger, E. D., & Smith, B. F. (2004). Environmental science: A study of interrelationships. McGraw-Hill.
Chicago Style aipamenaEnger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. Boston: McGraw-Hill, 2004.
MLA aipamenaEnger, Eldon D., and Bradley F. Smith. Environmental Science: A Study of Interrelationships. McGraw-Hill, 2004.
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