{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Introduction to the Operational Calculus.","author_name":"Lothar Berg","thumbnail_url":"https://www.ebooknetworking.net/books/072/042/big072042352X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-072042352X.html\">Introduction to the Operational Calculus.</a>","width":400,"height":300}