{ "item_title" : "What Are Sedimentary Rocks?", "item_author" : [" Natalie Hyde "], "item_description" : "It all starts with erosion for sedimentary rock. Worn down bits of rock become pressed together under pressure into strata, or layers. The formation of rock such as sandstone, shale, limestone, and dolomite is explained in this fact-filled book. Readers will also learn that this type of rock is useful in determining the Earth's geological history because its layers often hold fossils and other geological clues.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/0/77/877/235/0778772357_b.jpg", "price_data" : { "retail_price" : "9.95", "online_price" : "9.95", "our_price" : "9.95", "club_price" : "9.95", "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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