{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Rainey's improved abacus: an explanatory treatise on the theory and practice of arithmetic and mensuration ; in which the general principles involved ... by numerous analytic and abbreviated","author_name":"Thomas Rainey","thumbnail_url":"https://www.ebooknetworking.net/books/117/773/big1177738686.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1177738686.html\">Rainey&#039;s improved abacus: an explanatory treatise on the theory and practice of arithmetic and mensuration ; in which the general principles involved ... by numerous analytic and abbreviated</a>","width":400,"height":300}