Ethridge, Marcus E., author
Wadsworth, 2010
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Ethridge, Marcus E., author
Wadsworth and Cengage Learning, 2013
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Kesselman, Mark, author
Wadsworth and Cengage Learning, 2013
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Sederberg, Peter C.
Chandler & Sharp Publishers, 1977
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Curtis, Michael, author
Harper & Row, 1978
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