{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise On Field Fortification: Containing Instructions On the Methods of Laying Out, Constructing, Defending, and Attacking Intrenchments, with ... and Defence of Permanent Fortifications","author_name":"Dennis Hart Mahan","thumbnail_url":"https://www.ebooknetworking.net/books/114/854/big1148546669.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1148546669.html\">A Treatise On Field Fortification: Containing Instructions On the Methods of Laying Out, Constructing, Defending, and Attacking Intrenchments, with ... and Defence of Permanent Fortifications</a>","width":400,"height":300}