{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Essential Astrophysics (Undergraduate Lecture Notes in Physics)","author_name":"Kenneth R. Lang","thumbnail_url":"https://www.ebooknetworking.net/books/364/235/big3642359620.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-3642359620.html\">Essential Astrophysics (Undergraduate Lecture Notes in Physics)</a>","width":400,"height":300}