000 00273nam a2200097 4500
082 _a020 VIS/ELE;1
100 _aViswanathan, C G
245 _aElements of Informaiton science
_cby C G viswanathan
260 _aLondon
_bToday & Tomorrow's Printers & Pub.
_c1976
942 _cBK
999 _c378997
_d378997