Snowden, Petre E.
McGraw-Hill , 1998
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Gorton, Richard A., author
McGraw-Hill, 2012
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Gorlewski, Julie A.
Sense, 2012
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Morphet, Edgar L. (Edgar Leroy), 1895- , author
Prentice-Hall, 1982
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Krames, Jeffrey A., author
Gramedia Pustaka Utama, 2005
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