000 00268nam a2200109Ia 4500
999 _c10460
_d10460
020 _a070259607
100 _aDonald H Hamsher
245 _aCommunication System Engineering Handbook
260 _c1967
_bMcGRAW HILL
_aNew York
300 _axv+1-1-25-27+20
942 _cREF