{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Architectural acoustics (Circular of the Bureau of Standards)","author_name":"Paul R Heyl","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008C9ZOW.html\">Architectural acoustics (Circular of the Bureau of Standards)</a>","width":400,"height":300}