{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Estimating the cost structure of the local telephone exchange network (NRRI)","author_name":"David Gabel","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0006F0J3C.html\">Estimating the cost structure of the local telephone exchange network (NRRI)</a>","width":400,"height":300}