{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mechanical Advantages - Pulley Systems #1 & 2, V 1.21: Pulley Systems Explained and RESCUE","author_name":"Douglas Hansen","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B015V9CJ0S.html\">Mechanical Advantages - Pulley Systems #1 &amp; 2, V 1.21: Pulley Systems Explained and RESCUE</a>","width":400,"height":300}