{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Fall of the Birth-rate; a Paper Read Before the Cambridge University Eugenics Society, 20 May 1920","author_name":"","thumbnail_url":"https://www.ebooknetworking.net/books/129/080/big1290805385.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1290805385.html\">The Fall of the Birth-rate; a Paper Read Before the Cambridge University Eugenics Society, 20 May 1920</a>","width":400,"height":300}