{ "item_title" : "Genius Engineering Inventions", "item_author" : [" Matt Turner", "Sarah Conner "], "item_description" : "Tin cans were first produced in London in 1813. But they had to be opened with a hammer and chisel, because the can opener wasn't invented until 1855! Check out other amazing engineering innovations, such as a popular soft drink originally sold as a brain tonic, an 18th-century battery called a voltaic pile, and a design from 1596 for the first flushing toilet. Fact-packed text and fun illustrations reveal clever discoveries that changed the world--and weird ideas that didn't (like Nikola Tesla's earthquake machine or Thomas Edison's giant singing dolls). Learn how wonders of engineering have helped us improve our lives--from growing food to powering machinery.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/51/243/211/1512432113_b.jpg", "price_data" : { "retail_price" : "27.99", "online_price" : "27.99", "our_price" : "27.99", "club_price" : "27.99", "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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