{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Specifications for construction of roads and bridges in national forests and national parks as revised July 15, 1941. Federal works agency, Public roads administration","author_name":"United States. Bureau of Public Roads","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2YG/bigB002YGS2WQ.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002YGS2WQ.html\">Specifications for construction of roads and bridges in national forests and national parks as revised July 15, 1941. Federal works agency, Public roads administration</a>","width":400,"height":300}