000 00301nam a2200121Ia 4500
008 211209s1977 xx 000 0 und d
041 _aeng
082 _a621.382 N77 KEN
100 _aKENNEDY G
245 _aELECTRONIC COMMUNICATION SYSTEMS
260 _aNEW YORK
_bMC-GRAW HILL
_c1977
300 _a799
999 _c17156
_d17156