{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Measurement and Control of Respirable Dust in Mines: Report of the Committee on Measurement and Control of Respirable Dust, National Materials Adviso","author_name":"National Research Council. Committee on Measurement and Control of Res","thumbnail_url":"https://www.ebooknetworking.net/books/030/903/big0309030471.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0309030471.html\">Measurement and Control of Respirable Dust in Mines: Report of the Committee on Measurement and Control of Respirable Dust, National Materials Adviso</a>","width":400,"height":300}