{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Displacement Interferometry by the Aid of the Achromtic Fringes, Pt. [I]-IV: (Pt. 1 ) (1916-19)","author_name":"Carl Barus","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1112009590.html\">Displacement Interferometry by the Aid of the Achromtic Fringes, Pt. [I]-IV: (Pt. 1 ) (1916-19)</a>","width":400,"height":300}