000 00273nam a2200109 4500
020 _a233961666
082 _a029.7 SHA/INF
100 _aSharp, JR
245 _aInformation Retrieval ; Notes for Students
_cSharp, JR
260 _aLondon
_bAndrew Dentsch
_c1970
942 _cBK
999 _c380297
_d380297