000
00255nam a2200121Ia 4500
100
_a
RODDY, DENNIS
110
_a
COOLEN, J.
245
_a
ELECTRONIC COMMUNICATIONS
250
_a
III
260
_b
PRENTICE HALL
_c
1988
300
_a
788
942
_2
ddc
_c
BB
999
_c
73142
_d
73142