00297nam a2200121Ia 4500008004100000041000800041082001700049100001000066245004200076260002700118300002300145365000700168240624s9999    xx            000 0 und d  aeng  a658.4033 IGN  aIGNOU  aSAMPLING AND SAMPLING DISTRIBUTIONS 4  c2005aNew DelhibIGNOU  a84 : p. : cm. ; 26  cRS