{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Tables of calculated hour-angles and altitude azimuth table 30N. to 30S. Ex-meridian tables 70N. to","author_name":"Harold S. Blackburne","thumbnail_url":"https://www.ebooknetworking.net/books/111/582/big1115829262.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1115829262.html\">Tables of calculated hour-angles and altitude azimuth table 30N. to 30S. Ex-meridian tables 70N. to</a>","width":400,"height":300}