{ "item_title" : "Machines in the Sky", "item_author" : [" Kay Barnham "], "item_description" : "From hot-air balloons to stealth aircraft that can hide from radar, machines that fly in the sky are amazing feats of technology. They're made possible by developments in engineeringIn this volume, readers encounter many high-flying machines, including helicopters, drones, and even jetpacksDetailed text describes the science behind how each machine works while clear diagrams aid readers understanding. Sidebars about the coolest in flying technology are accompanied by full-color, high-velocity photographs showing these machines in action.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/53/827/763/1538277638_b.jpg", "price_data" : { "retail_price" : "28.27", "online_price" : "28.27", "our_price" : "28.27", "club_price" : "28.27", "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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