000 00318nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c625
040 _aET
100 _aS.K. BAJPAI
245 0 _aMODERN INFORMATION RETRIO
260 _bESS-ESS PUB.
_aNEW DELHI
300 _a302
500 _a11981
942 _cBK
999 _c18301
_d18301