00306nam a2200121 a 4500008004100000050001500041100001800056245003900074246004100113250001200154260000900166350000900175120416s1991    xx |||||||||||||| ||    u  aTS 320 Tup  aTupkary, R. H10aIntroduction to modern steelmaking  aa text book for engineering students  a5th ed.  c1991  a0.00