{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Core Strength for 50+: A Customized Program for Safely Toning Ab, Back & Oblique Muscles","author_name":"Knopf, Karl","thumbnail_url":"https://www.ebooknetworking.net/books/B00/8QO/bigB008QOEZSA.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B008QOEZSA.html\">Core Strength for 50+: A Customized Program for Safely Toning Ab, Back &amp; Oblique Muscles</a>","width":400,"height":300}