Anton, Howard
John Wiley & Sons, 2011
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Beckmann, Sybilla
Pearson Addison Wesley, 2008
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Phares Odaffer, Randall Charles, Thomas Cooney, John Dossey, Jane Schielack
Pearson Addison Wesley, 2008
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Long, Calvin T.
Pearson - Addison Wesley, 2009
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Garstens, Helen L.
Macmillan, 1969
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