{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Switchboard measuring instruments for continuous and polyphase systems","author_name":"John C. Connan","thumbnail_url":"https://www.ebooknetworking.net/books/115/511/big1155110560.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1155110560.html\">Switchboard measuring instruments for continuous and polyphase systems</a>","width":400,"height":300}