Winit Leongsrisook. (2005) A study of the relationship between safety management quality and occupational injury rate on state enterprises. Mahidol University,:ม.ป.ท.Winit Leongsrisook. 2005. A study of the relationship between safety management quality and occupational injury rate on state enterprises. ม.ป.ท.:Mahidol University,;Winit Leongsrisook. A study of the relationship between safety management quality and occupational injury rate on state enterprises. ม.ป.ท.:Mahidol University, 2005. Print.