{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Biological Problem of To-Day: Preformation Or Epigenesis? the Basis of a Theory of Organic Development","author_name":"Oscar Hertwig","thumbnail_url":"https://www.ebooknetworking.net/books/114/151/big1141517892.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1141517892.html\">The Biological Problem of To-Day: Preformation Or Epigenesis? the Basis of a Theory of Organic Development</a>","width":400,"height":300}