{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"How Congress Evolves: Social Bases of Institutional Change","author_name":"Nelson W. Polsby","thumbnail_url":"https://www.ebooknetworking.net/books/019/516/big0195161955.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0195161955.html\">How Congress Evolves: Social Bases of Institutional Change</a>","width":400,"height":300}