{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"XX International Physics Olympiad: Proceedings of the XX International Physics Olympiad, Warsaw, 16-24 July 1989","author_name":"","thumbnail_url":"https://www.ebooknetworking.net/books/981/020/big9810200846.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-9810200846.html\">XX International Physics Olympiad: Proceedings of the XX International Physics Olympiad, Warsaw, 16-24 July 1989</a>","width":400,"height":300}