{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The HR Diagram: The 100th Anniversary of Henry Norris Russell Symposium No. 80 Held at the National Academy of Sciences, Washington, D.C., 2-5 November, 1977","author_name":"Henry Norris; Hayes, D.S.; Philip, A. G. Davis; International Astronomical Union Russell","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B000MBQOS4.html\">The HR Diagram: The 100th Anniversary of Henry Norris Russell Symposium No. 80 Held at the National Academy of Sciences, Washington, D.C., 2-5 November, 1977</a>","width":400,"height":300}