000 00410nam a2200157Ia 4500
008 160902s9999 xx 000 0 und d
020 _a81-7319-179-4
040 _cPK-GjGUL
082 _a004.6
_bHUG-I
100 _a"Hughes, Larry"
245 0 _aIntroduction data communications
_b a practical approach
260 _aPakistan
_bNarosa Publishing House
_c1997
300 _a502
546 _aEng.
942 _cBK
999 _c1263
_d1263