{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Evolution of Principia Mathematica: Bertrand Russell's Manuscripts and Notes for the Second Edition","author_name":"Bernard Linsky","thumbnail_url":"https://www.ebooknetworking.net/books/110/700/big110700327X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-110700327X.html\">The Evolution of Principia Mathematica: Bertrand Russell&#039;s Manuscripts and Notes for the Second Edition</a>","width":400,"height":300}