000 00323nam a22001217a 4500
008 230725b |||||||| |||| 00| 0 eng d
022 _a8756-2324
040 _aNational Science Library
_cNational Science Library
245 _aAT & T technical journal
260 _bNew York:
_cAT & AT,
310 _aMonthly
942 _cCR
999 _c55087
_d55087