{"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 (1862)","author_name":"D. H. Mahan","thumbnail_url":"https://www.ebooknetworking.net/books/110/400/big1104007460.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1104007460.html\">A Treatise On Field Fortification: Containing Instructions On The Methods Of Laying Out, Constructing, Defending, And Attacking Intrenchments (1862)</a>","width":400,"height":300}