{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Notes on two varieties of pyrite from the Basal Reef of the Free State Geduld Mine, Orange Free State Goldfield (Information circular / Economic Geology Research Unit)","author_name":"Rudolf Saager","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0007JENGG.html\">Notes on two varieties of pyrite from the Basal Reef of the Free State Geduld Mine, Orange Free State Goldfield (Information circular / Economic Geology Research Unit)</a>","width":400,"height":300}