Chalermpong Polee และผู้แต่งคนอื่นๆ. (2015) Comparative Investigation and Improvement of Film Radiography Speed for Non-Destructive Inspection of Industrial Specimens. Chulalongkorn University:ม.ป.ท.Chalermpong Polee และผู้แต่งคนอื่นๆ. 2015. Comparative Investigation and Improvement of Film Radiography Speed for Non-Destructive Inspection of Industrial Specimens. ม.ป.ท.:Chulalongkorn University;Chalermpong Polee และผู้แต่งคนอื่นๆ. Comparative Investigation and Improvement of Film Radiography Speed for Non-Destructive Inspection of Industrial Specimens. ม.ป.ท.:Chulalongkorn University, 2015. Print.