00411nam a2200157Ia 4500008004100000020001400041082001700055100001800072245003900090250000600129260004400135300000800179650001600187650001800203653003200221170901s1971    xx            000 0 und d  a471028673  a519.54bC54P  aConover, W.J. 0aPractical Nonparametric Statistics  a2  aNew YorkbJohn Wiley and Sons Incc1971  a493  aMathematics  aPure Sciences  aNon-parametrical statistics