{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Handbook of rock excavation, methods and cost","author_name":"Halbert Powers Gillette","thumbnail_url":"https://www.ebooknetworking.net/books/117/801/big1178012573.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1178012573.html\">Handbook of rock excavation, methods and cost</a>","width":400,"height":300}