{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The theory of modern optical instruments;: A reference book for physicists, manufacturers of optical instruments, and for officers in the Army and Navy,","author_name":"Alexander Wilhelm Gleichen","thumbnail_url":"https://www.ebooknetworking.net/books/B00/086/bigB0008691PQ.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008691PQ.html\">The theory of modern optical instruments;: A reference book for physicists, manufacturers of optical instruments, and for officers in the Army and Navy,</a>","width":400,"height":300}