000 00273nam a2200109Ia 4500
008 200701s2000 xx 000 0 eng d
100 _aUMESH SINHA
245 0 _aPRINCIPLES OF COMMUNICATION SYSTEMS
260 _bDHANPAT RAI PUBLISHERS
_c2000
300 _a837
942 _2ddc
_cGE
999 _c895
_d895