{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The earth's magnetic field : its history, origin, and planetary perspective (International Geophysics)","author_name":"","thumbnail_url":"https://www.ebooknetworking.net/books/012/491/big0124912400.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0124912400.html\">The earth&#039;s magnetic field : its history, origin, and planetary perspective (International Geophysics)</a>","width":400,"height":300}