000			00419nam a2200157Ia 4500
003			NIELib
008			211019s9999||||xx |||||||||||||| ||und||
020			_a0408106484
082			_a025.04 _bINF
245			_aInformation retrieval experiment
260			_bButterworths, _c1981. _aLondon :
300			_a352p. _c24cm
650			_aLibrary and Information Science
700			_aJones, Karen Sparck _eEd.
942			_2ddc _cSR
999			_c16887 _d16887