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Molles, Manuel G.. (2013). Ecology : concepts and application (6th ed). New York: McGraw-Hill.

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Molles, Manuel G.. Ecology : concepts and application. 6th ed New York: McGraw-Hill, 2013. Text.

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Molles, Manuel G.. Ecology : concepts and application. 6th ed New York: McGraw-Hill, 2013. Text.

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Molles, Manuel G.. Ecology : concepts and application. 6th ed New York: McGraw-Hill, 2013. Print.