{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Approximations for column effect in airplane wing spars (Report / National Advisory Committee for Aeronautics)","author_name":"Edward P Warner","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008CP9UG.html\">Approximations for column effect in airplane wing spars (Report / National Advisory Committee for Aeronautics)</a>","width":400,"height":300}