000 00292pam a2200097a 44500
082 _aTR
_bNBS-260-26
100 _aJ. F. Martin
245 1 _aNational bureau of standards U.S.Steel corporation joint program for deter mining oxygen and nitrogen in steel
260 _a
_b
_c
997 _aTR4251 C
999 _c405143
_d405143