{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"An Elementary Course Of Permanent Fortification: For The Use Of The Cadets Of The U.s. Military Academy","author_name":"Dennis Hart Mahan","thumbnail_url":"https://www.ebooknetworking.net/books/117/605/big1176055712.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1176055712.html\">An Elementary Course Of Permanent Fortification: For The Use Of The Cadets Of The U.s. Military Academy</a>","width":400,"height":300}