{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Economics of Contracting; A Treatise for Contractors, Engineers, Superintendents and Foremen Engaged in Engineering Contracting Work","author_name":"Daniel Jacob Hauer","thumbnail_url":"https://www.ebooknetworking.net/books/115/386/big1153861097.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1153861097.html\">The Economics of Contracting; A Treatise for Contractors, Engineers, Superintendents and Foremen Engaged in Engineering Contracting Work</a>","width":400,"height":300}