00331nam a2200121Ia 4500008004100000041001200041082001600053100001600069245007700085260001600162300001100178650002000189231217s9999    xx            000 0 und d  aEnglish  a025.58  KAW  aKawatra P S 0aLibrary user studies: A manual for librarians and information scientists  c1994bJaico  aix+301  aLibrary science