000 00266nam a2200109Ia 4500
008 200701s2011 xx 000 0 eng d
100 _aRICARDO BAEGA YAPES
245 0 _aMODERN INFORMATION RETRIEVAL
260 _bSULTAN CHAND
_c2011
300 _a513
942 _2ddc
_cGE
999 _c5243
_d5243