000 00309nam a2200133Ia 4500
999 _c22269
_d22269
020 _a0852261500
100 _aDas J.
245 _aPrinciples of digital communication
250 _a2
260 _c1992
_bWILEY EASTERN
_aNew Delhi
300 _axv+638
700 _aMullick S K
_aChatterjee P K
942 _cBB