{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Investigation of the mercury arc rectifier by means of the oscillograph","author_name":"J C Hail, E E Campbell","thumbnail_url":"https://www.ebooknetworking.net/books/117/863/big1178634221.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1178634221.html\">Investigation of the mercury arc rectifier by means of the oscillograph</a>","width":400,"height":300}