00347nam a2200109Ia 4500008004100000082001300041100002300054245005200077260005100129300001700180650004000197140113s9999    xx            000 0 und d  a519.2 J0  a"Walker, Helen M."  aMathematics essential for elementary statistics  b"New Delhi : Oxford & IBH publishing Co, 1970"  a"xiii, 382p"  aElementary statistics ; Mathematics