000 00271nam a2200109 4500
020 _a8176481637
082 _a020 KAW/TEX
100 _aKawatra P S
245 _aTextbook of Information Science
_cby Kawatra P S
260 _aNew Delhi
_bAPH Publishers
_c2000
942 _cBK
999 _c381474
_d381474