PH GradeAssist : homework assessment system instructor quick start guide [for] Calculus. 8th ed. / Varberg, Purcell, Rigdon.
Varberg, Dale E.Calculus.
Upper Saddle River, N.J. : Pearson/Prentice Hall
c2004.
Cover title.
Contains access codes for Web-based resources at http://www.prenhall.com/phga/.
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