00290nam a2200109Ia 4500008004100000022001800041040002500059082001600084100002400100245002600124260003000150240215s9999    xx            000 0 und d  a0-065011138-4  aNORSU-DumcNORSU-Dum  a001.642/P47  aPfafenberger, Bryan 0aEssential of Dbase IV  bHarper Collins Pub.c1992