{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Comparative tests of induction wattmeters","author_name":"Elmer J Sigwalt, Charles S. Henning","thumbnail_url":"https://www.ebooknetworking.net/books/117/565/big1175659452.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1175659452.html\">Comparative tests of induction wattmeters</a>","width":400,"height":300}