00405nam a2200181Ia 4500003000400000020001800004020001800022020001800040082001600058100002100074245002800095250000600123260002900129300000800158546001200166650002500178650002000203OSt  a9780120885510  a9780123743886  a9789380931906  a012bROS/IN  aRoss, Sheldon M.  aIntroductory statistics  a2  aUKbElsevierc2009c2011  a364  aenglish  anature of statistics  arandom sampling