58.
Legacy of Lost Canyon : A Curious Cave Conundrum
by Tharp, Barbara, Cutler, Pau...
ISBN: 9781888997835
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Scientific-Decision-Making Teacher's Guide Supplement
by McNeel, Ronald, Tharp, Barb...
ISBN: 9781888997859
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Water and My World - Mystery of the Muddled Marsh
by Tharp, Barbara, Dresden, Ju...
ISBN: 9781888997309
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Water and My World - Activities Guide for Teachers
by Moreno, Nancy, Tharp, Barba...
ISBN: 9781888997156