{ "item_title" : "Exploring Rock Types", "item_author" : [" Claudia Martin "], "item_description" : "From towering mountains that rise above the surrounding land to hardened magma, the natural world is made up of thousands of different kinds of rock. How do rocks get their different shapes and unique colors? What are the three main rock types? And how have humans throughout history used rocks? Extraordinary photos and real-world examples invite readers to explore rock types, while an encyclopedic-entry-style format makes the text approachable and highly browsable. Final comprehension questions engage readers to check what they have learned to reenforce comprehension.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/9/79/889/577/9798895777473_b.jpg", "price_data" : { "retail_price" : "31.95", "online_price" : "31.95", "our_price" : "31.95", "club_price" : "31.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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