{ "item_title" : "A Short Course On The Theory And Operation Of The Free Balloon (1917)", "item_author" : [" Charles Harters Roth "], "item_description" : "A Short Course on the Theory and Operation of the Free Balloon is a book written by Charles Harters Roth in 1917. The book is a comprehensive guide to the principles and mechanics of free balloon flight. It covers topics such as the history of ballooning, the physics of hot air and gas balloons, the design and construction of balloons, and the techniques and procedures for launching, steering, and landing balloons. The book is intended for both novice and experienced balloonists, as well as anyone interested in the science and technology of ballooning. It includes detailed illustrations and diagrams, as well as practical advice and tips for safe and successful balloon flights. Overall, A Short Course on the Theory and Operation of the Free Balloon is a valuable resource for anyone interested in the fascinating world of ballooning.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/43/746/704/1437467040_b.jpg", "price_data" : { "retail_price" : "20.95", "online_price" : "20.95", "our_price" : "20.95", "club_price" : "20.95", "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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