{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Photometric Measurements of the Variable Stars B Persei and DM. 81>0 25, Made at the Harvard College","author_name":"Arthur Searle Oliver Charles Pickering","thumbnail_url":"https://www.ebooknetworking.net/books/111/351/big1113510471.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1113510471.html\">Photometric Measurements of the Variable Stars B Persei and DM. 81&gt;0 25, Made at the Harvard College</a>","width":400,"height":300}