{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Dark Matter Problem: A Historical Perspective","author_name":"Robert H. Sanders","thumbnail_url":"https://www.ebooknetworking.net/books/052/111/big0521113016.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0521113016.html\">The Dark Matter Problem: A Historical Perspective</a>","width":400,"height":300}