000
00290nam a2200109Ia 4500
008
220201s1992 xx 000 0 eng d
100
_a
DAS, J
245
0
_a
PRINCIPLES OF DIGITAL COMMUNICATION
260
_a
LONDON
_b
THAMES AND HUDSON PUBLISHING COMPANY
_c
1992
300
_a
645
942
_2
ddc
999
_c
60188
_d
60188