Amy Leput Strahl
Becky Strahl
Richard A. Strahl
Rudi Strahl
Rudi Strahl
Rudi Strahl
Philipp Carl Strahl
Messler, Robert W., Jr.
David Ramon Quinonez
Joseph A. Ciaramitaro
American Technical Publishers American Technical Publishers
Rajiv Sharan Mishra
David H. Phillips
NCCER
David H. Phillips
Hongyan Zhang
Kevin E. Bowditch
F. C. Campbell
Hongyan Zhang
Tzyh-Jong Tarn
Indra Putra Almanar
Lincoln Electric Company
Richard J. Rowe
Kevin E. Bowditch
Elektriska svetsningsaktiebolaget.
Linde Air Products Company.
Shiyao Shen