{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Treatise on field fortification: the attack of fortresses, military mining and reconnoitring","author_name":"John Shortall Macaulay","thumbnail_url":"https://www.ebooknetworking.net/books/117/780/big1177808811.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1177808811.html\">Treatise on field fortification: the attack of fortresses, military mining and reconnoitring</a>","width":400,"height":300}