{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The gyroscopic compass;: a non-mathematicaltreatment,","author_name":"Thomas Wightman Chalmers","thumbnail_url":"https://www.ebooknetworking.net/books/142/977/big1429778504.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1429778504.html\">The gyroscopic compass;: a non-mathematicaltreatment,</a>","width":400,"height":300}