{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Canonical Gravity: From Classical to Quantum : Proceedings of the 117th We Heraeus Seminar Held at Bad Honnef, Germany, 13-17 September 1993 (Lecture Notes in Physics)","author_name":"J. Ehlers","thumbnail_url":"https://www.ebooknetworking.net/books/038/758/big0387583394.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0387583394.html\">Canonical Gravity: From Classical to Quantum : Proceedings of the 117th We Heraeus Seminar Held at Bad Honnef, Germany, 13-17 September 1993 (Lecture Notes in Physics)</a>","width":400,"height":300}