{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The physical basis of atomic frequency standards","author_name":"A. S. Risley","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3YR/bigB003YRIQXO.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003YRIQXO.html\">The physical basis of atomic frequency standards</a>","width":400,"height":300}