00257nam a2200109Ia 4500100002600000654001800026245002400044260004400068082001500112300000800127546001200135  aUnterweiser P. M. ed   aHeat Treaters  aHeat Treaters Guide  bAmerican Society for metalsaOhioc1987  a672.3bAsm  a493  aENGLISH