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by Veysey, Laurence R.
by University of Chicago School Mathematic Project
by OPEN UNIVERSITY
by Sussman, Varda
by Richard Middleton (The Queen's University, Belfast)
by Thomas H. Wonnacott (University of Western Ontario); Ronald J. Wonnacott (University of Western Ontario)
by Cambridge University Press
by Ralph Fasold (Georgetown University)
by Hargrove, Erwin C.
by Delores M. Etter (University of Colorado, Boulder)
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