{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Theory of Fertility Decline (Population and social structure)","author_name":"John Caldwell","thumbnail_url":"https://www.ebooknetworking.net/books/012/155/big012155080X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-012155080X.html\">Theory of Fertility Decline (Population and social structure)</a>","width":400,"height":300}