{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The effect of adjustment period on maximum acceptable frequency for a roofing task [An article from: International Journal of Industrial Ergonomics]","author_name":"S.D. Choi, T.K. Fredericks","thumbnail_url":"https://www.ebooknetworking.net/books/B00/0PD/bigB000PDU43K.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B000PDU43K.html\">The effect of adjustment period on maximum acceptable frequency for a roofing task [An article from: International Journal of Industrial Ergonomics]</a>","width":400,"height":300}