{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Reversals of the Earth's Magnetic Field","author_name":"J. A. Jacobs","thumbnail_url":"https://www.ebooknetworking.net/books/052/167/big0521675561.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0521675561.html\">Reversals of the Earth&#039;s Magnetic Field</a>","width":400,"height":300}