Training Education and Instruction of Welding Engineer and Operators with in the Company
企業内における溶接技術者,技術者の教育訓練

Itsuhiko Sejima, Michio Kitamura, Yutaka Koda
1968 JOURNAL OF THE JAPAN WELDING SOCIETY  
doi:10.2207/qjjws1943.37.1178 fatcat:fbhknaebbbeqdpcfvjbtr5y4rm