{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Grube's method of teaching arithmetic: explained and illustrated, also the improvements upon the method made by the followers of Grube in Germany","author_name":"Levi Seeley, August Wilhelm Grube","thumbnail_url":"https://www.ebooknetworking.net/books/117/664/big1176644688.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1176644688.html\">Grube&#039;s method of teaching arithmetic: explained and illustrated, also the improvements upon the method made by the followers of Grube in Germany</a>","width":400,"height":300}