00414cam a2200169   450000500170000024500700001702000150008710000240010204400160012625000090014204100080015130000180015950000050017783000060018226000380018808200180022620260711133907.0  aEstadistica:Elementos de estadistica descriptiva yprobabilidad.b  a8484050785  aBonilla, Gildaberto  aEl Salvador  a4ª   aspa  a413 p. 22 cm.  a  v1  aSan Salvador bUCA Editoresc1991  a519.53bB715e