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HARDIN, Garrett. (1961). Biology Its Principles and Implications . San Francisco: W.H. Freeman And Company.

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HARDIN, Garrett. Biology Its Principles and Implications. San Francisco: W.H. Freeman And Company, 1961. Teks.

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HARDIN, Garrett. Biology Its Principles and Implications. San Francisco: W.H. Freeman And Company, 1961. Teks.

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HARDIN, Garrett. Biology Its Principles and Implications. San Francisco: W.H. Freeman And Company, 1961. Teks.