Kulitsara Kralam และ Nutta Taneepanichskul. (2015) KNOWLEDGE ATTITUDE AND PRACTICE TOWARDS PERSONAL PROTECTIVE EQUIPMENT USE AMONG STEEL INDUSTRY WORKERS IN THAILAND. Chulalongkorn University:ม.ป.ท.Kulitsara Kralam และ Nutta Taneepanichskul. 2015. KNOWLEDGE ATTITUDE AND PRACTICE TOWARDS PERSONAL PROTECTIVE EQUIPMENT USE AMONG STEEL INDUSTRY WORKERS IN THAILAND. ม.ป.ท.:Chulalongkorn University;Kulitsara Kralam และ Nutta Taneepanichskul. KNOWLEDGE ATTITUDE AND PRACTICE TOWARDS PERSONAL PROTECTIVE EQUIPMENT USE AMONG STEEL INDUSTRY WORKERS IN THAILAND. ม.ป.ท.:Chulalongkorn University, 2015. Print.