000 00304nam a2200121Ia 4500
008 151011s9999 xx 000 0 und d
041 _aENG
100 _aPrasher, R. G.
245 _aInformation and its communication
260 _c1991
_aNew Delhi
_bMedallion Press
300 _a224p.
942 _cBK
_2udc
999 _c20935
_d20935