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by Erickson, Tim
by Tim Erickson
by Salkind, Neil J.
by Clements, Cindy
by Allan Rossman (California Polytechnic State University, San Luis Obispo); Beth Chance (California Polytechnic State University, San Luis Obispo)
by Key Curriculum Press
by David S. Moore
by Fred Hoppe and David S. Moore
by Paul Stephenson, Neal Rogness, Patricia Stephenson, David S. Moore, George P. Mc