{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Swingin' on a spar: the birth and development of variable--geometry aircraft.: An article from: Airpower","author_name":"Mike Machat","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00084HQPA.html\">Swingin&#039; on a spar: the birth and development of variable--geometry aircraft.: An article from: Airpower</a>","width":400,"height":300}