{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Natural Focusing and Fine Structure of Light: Caustics and Wave Dislocations","author_name":"J.F Nye","thumbnail_url":"https://www.ebooknetworking.net/books/075/030/big0750306106.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0750306106.html\">Natural Focusing and Fine Structure of Light: Caustics and Wave Dislocations</a>","width":400,"height":300}