{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Combinatorial Group Theory: Presentations of Groups in Terms of Generators and Relations (Dover Books on Mathematics)","author_name":"Wilhelm Magnus, Abraham Karrass, Donald Solitar","thumbnail_url":"https://www.ebooknetworking.net/books/048/643/big0486438309.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0486438309.html\">Combinatorial Group Theory: Presentations of Groups in Terms of Generators and Relations (Dover Books on Mathematics)</a>","width":400,"height":300}