00257nam a2200097Ia 4500008004100000082001800041100001500059245005100074260002300125650001100148060110s9999    xx            000 0 und d  a519.54bPOT/T  aPOTTI, L R 2aA text book of statistics for B.B.ScL R Potti  bYamuna Publication  a519.54