000 00258nam a2200109Ia 4500
008 220201s1999 xx 000 0 eng d
100 _aSIMON, M.K.
245 0 _aDIGITAL COMMUNICATION TECHNIQUES
260 _aDELHI
_bPHI
_c1999
300 _a877
942 _2ddc
999 _c68352
_d68352