Paynter, Robert T.
Prentice Hall International, 1997
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Hassul, Michael, author
Prentice-Hall, 1997
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Boylestad, Robert L., author
Pearson - Prentice Hall, 2009
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Boylestad, Robert L., author
Prentice-Hall, 1982
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Boylestad, Robert L.
Pearson Prentice Hall, 2013
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