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Conceptual Physical Science Explorations
 
Conceptual Physical Science Explorations
by Paul G. Hewitt, John Suchocki, Leslie A. Hewitt
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$12 to $99
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1000 Inventions & Discoveries
 
1000 Inventions & Discoveries
by Roger Bridgman, Smithsonian Institution
4/5 stars (1 user rating)
$7 to $19
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