000 00245nam a2200109Ia 4500
100 _aKENNEDY, GEORGE
110 _aDAVIS, BERNARD
245 _aELECTRONIC COMMUNICATION SYSTEMS
260 _bMCGRAW HILL
_c1977
300 _a774
942 _2ddc
_cBB
999 _c72239
_d72239