000
00230nam a2200109Ia 4500
082
_a
621.38041 HAY
100
_a
HAYKIN, SIMON
245
_a
DIGITAL COMMUNICATIONS
260
_b
JOHN WILEY
_c
1988
300
_a
597
942
_2
ddc
_c
B
999
_c
54896
_d
54896