{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Borehole gravimetry reviews (U.S. Geological Survey circular)","author_name":"Stephen L Robbins","thumbnail_url":"https://www.ebooknetworking.net/books/B00/06E/bigB0006EPX1G.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0006EPX1G.html\">Borehole gravimetry reviews (U.S. Geological Survey circular)</a>","width":400,"height":300}