00366nam a2200121Ia 4500008004100000082001800041100002000059245004300079260003400122300001400156490003100170500004300201260612b        |||||||| |||| 00| 0 eng d  a029.7bK76.PI  aKochen, Manfred  aPrinciples of information retrievalb/  aLos Angeles:bMelville,c1974  axx, 203p.  aInformation science series  a"A Wiley-Becker and Hayes series book"