00535nam a2200193Ia 4500001000700000003000500007008004100012010001100053040000900064082001500073100002500088245008900113260004500202300000800247440000500255500000500260503001100265650006500276Z_4000CHAP220113s1987    xx            000 0 und d  a167060  cCHAP  a519.52 S3y  aScheaffer, Richard L  aElementos de muestreo  /cpor  Richard L Scheaffer, William Mendenhall and Lyman Ott  aMéxico, D.F.  :bIberoamericana,c1987  a321  a  a  a136640  aMuestreo estadístico I. Mendenhall, William II. Ott, Lyman