{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Key to Robinson's New Geometry and trigonometry, and conic sections and analytical geometry; With some additional astronomical problems. Designed for teachers and students","author_name":"Horatio Nelson Robinson","thumbnail_url":"https://www.ebooknetworking.net/books/113/091/big1130911241.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1130911241.html\">Key to Robinson&#039;s New Geometry and trigonometry, and conic sections and analytical geometry; With some additional astronomical problems. Designed for teachers and students</a>","width":400,"height":300}