TY - BOOK ED - American Welding Society. ED - American Welding Society. ED - American Welding Society. TI - Tentative standard qualification procedure U1 - 671.52 PY - 1941/// CY - New York PB - American Welding Society KW - MCE KW - Welding KW - Standards N1 - Cover-title; 0; 0; 0; 671_520000000000000_TEN ER -