{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Azimuth: A Treatise On This Subject With A Study Of The Astronomical Triangle And Of The Effect Of Errors In The Data (1887)","author_name":"Joseph Edgar Craig","thumbnail_url":"https://www.ebooknetworking.net/books/054/884/big0548841748.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0548841748.html\">Azimuth: A Treatise On This Subject With A Study Of The Astronomical Triangle And Of The Effect Of Errors In The Data (1887)</a>","width":400,"height":300}