000 00255 a2200097 4500
001 36027
100 _aHancock J C
245 _aAn Introduction to the principles of communication theory
260 _aN Delhi
_bTata McGraw Hill
_c
090 _c23511
_d23511
942 _aNUST-CAE
_cM
_c15016
999 _c271100
_d271100