{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Toward Sustainable Agricultural Systems in the 21st Century","author_name":"Board on Agriculture and Natural Resources, Committee on Twenty-First Century Systems Agriculture, Division on Earth and Life Studies, National Research Council","thumbnail_url":"https://www.ebooknetworking.net/books/030/914/big0309148960.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0309148960.html\">Toward Sustainable Agricultural Systems in the 21st Century</a>","width":400,"height":300}