Freeman, Scott
Biological science
Prentice-Hall, 2002
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Keeton, William T.
Biological science
Penguin Books, 1976
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Keeton, William T.
Biological science
W.W. Norton, 1967
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Readings in biological science
edited by Irving William Knobloch
Appleton-Century-Crofts, 1967
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Herren, Ray V.
The science of agriculture : a biological approach
Delmar Cengage Learning, 2012
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