{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Technical Memorandums, National Advisory Committee for Aeronautics. No.444. Calculating Thrust Distribution and Efficiency of Air Propellers","author_name":"Theodor Bienen","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B004KL1X56.html\">Technical Memorandums, National Advisory Committee for Aeronautics. No.444. Calculating Thrust Distribution and Efficiency of Air Propellers</a>","width":400,"height":300}