00479cam a2200169 i 4500020001700000050001700017100001700034245005300051250001100104260005300115300002600168650001400194650002600208650002500234700002300259700002700282  a0914904108 :00aRA964.5 19751 aHess, Irene.10aProbability sampling of hospitals and patients /  a2d ed.  aAnn Arbor :bHealth Administration Press,c1975.  a202, [5] p. :bill. ; 0aHospitals 0aSampling (Statistics) 0aHospital utilization1 aRiedel, Donald C.,1 aFitzpatrick, Thomas B.