THE importance of the electrodes has been realized in America and the number used is surprisingly large.
Grimaud, R. (1947), "Welding in the U.S. Aircraft Industry: A French Production Engineer's Views on the Position of Welding in America", Aircraft Engineering and Aerospace Technology, Vol. 19 No. 11, pp. 361-365. https://doi.org/10.1108/eb031572
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