{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Principles of Programming Languages","author_name":"Maclennan","thumbnail_url":"https://www.ebooknetworking.net/books/003/061/big0030617111.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0030617111.html\">Principles of Programming Languages</a>","width":400,"height":300}