000 00312nam a22001097a 4500
008 230905b |||||||| |||| 00| 0 eng d
022 _a1389-1286
040 _aNational Science Library
_cNational Science Library
245 _aComputer networks
260 _bNorth-Holland Publishing Company,
_c1979
942 _cCR
999 _c60284
_d60284