{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A treatise on belts & pulleys; embracing full explanations of fundamental principles; proper disposition of pulleys; rules, formulas & tables for ... running over covered pulleys; strength & prop","author_name":"John Howard Cromwell","thumbnail_url":"https://www.ebooknetworking.net/books/117/764/big1177642921.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1177642921.html\">A treatise on belts &amp; pulleys; embracing full explanations of fundamental principles; proper disposition of pulleys; rules, formulas &amp; tables for ... running over covered pulleys; strength &amp; prop</a>","width":400,"height":300}