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by Trefil, James; Hazen, Robert M.
by Pandit, Nita K.; Soltis, Robert P.
by Wiley Rental
by Thomas R Black
by COLBERT
by Anthony J. Gaudin (Ivy Tech Community College); James Trefil (George Mason Univ.); Robert M. Hazen (George Mason Univ.)
by James Trefil (George Mason University); Robert M. Hazen (George Mason University)
by Colbert/Ankney/Wilson/Havrilla