{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Logarithmic and trigonometric tables and mathematical formulas","author_name":"Ernst R. 1874- Breslich","thumbnail_url":"https://www.ebooknetworking.net/books/117/681/big117681995X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-117681995X.html\">Logarithmic and trigonometric tables and mathematical formulas</a>","width":400,"height":300}