00393nam a2200145Ia 4500008004100000020001500041082001700056100002000073245004500093260003400138300000800172650001700180650001600197653003400213170901s1979    xx            000 0 und d  a0313205213  a010.78bK57E  aKiewitt, Eva L. 0aEvaluating Information Retrieval Systems  aLondonbGreenwood Pressc1979  a168  aBibliography  aGneralities  aInformation retrieval systems