2007 Houghton Mifflin Level 5 Physical Science: Exploring and Using Energy; Earth Science: Water Resources -- Niagara Falls: The Power of Water (P) by Elaine Lu ***Number of Words: 1840 ***ISBN-13: 9780618598847 ***Pages: 162007 Houghton Mifflin Level 5 Physical Science: Exploring and Using Energy; Earth Science: Water Resources -- Niagara Falls: The Power of Water (P) by Elaine Lu ***Number of Words: 1840 ***ISBN-13: 9780618598847 ***Pages: 16
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