000
00271nam a22001097a 4500
020
_a
9971511452
082
_a
621.382
100
_a
HAYKIN,Simon
245
_a
introduction to analog and digital communications
260
_a
singapore
_b
John wiley&sons
_c
1989
942
_c
BK
999
_c
452890
_d
452890