{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Demographic Transition Theory","author_name":"John C. Caldwell","thumbnail_url":"https://www.ebooknetworking.net/books/904/817/big9048171164.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-9048171164.html\">Demographic Transition Theory</a>","width":400,"height":300}