00286nam a2200109Ia 4500008004100000041000800041100001500049245004400064260004200108365000700150999001900157231011s9999    xx            000 0 und d  aeng  aGupta C.B.  aAn Introduction to Statistical Methods.  bVikas Pub. House Pvt. Ltd. N.Delhi. -  b40  c883133d883133