{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise On Field Fortification, and Other Subjects Connected with the Duties of the Field Engineer. [With] Plates","author_name":"John Shortall Macaulay","thumbnail_url":"https://www.ebooknetworking.net/books/114/713/big1147134707.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1147134707.html\">A Treatise On Field Fortification, and Other Subjects Connected with the Duties of the Field Engineer. [With] Plates</a>","width":400,"height":300}