{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Polar Planimeter and Its Use in Engineering Calculations: Together with Tables, Diagrams and Factors for the Immediate Adjustment of the Instrument for the Solution of Problems ... Etc., Etc., Etc","author_name":"Joseph Yendes Wheatley","thumbnail_url":"https://www.ebooknetworking.net/books/114/420/big1144204798.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1144204798.html\">The Polar Planimeter and Its Use in Engineering Calculations: Together with Tables, Diagrams and Factors for the Immediate Adjustment of the Instrument for the Solution of Problems ... Etc., Etc., Etc</a>","width":400,"height":300}