{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A study of the rock-bolt anchorage mechanism: Evaluation of a spring plate and various expansion units","author_name":"Robert M Cox","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0007H5Z3I.html\">A study of the rock-bolt anchorage mechanism: Evaluation of a spring plate and various expansion units</a>","width":400,"height":300}