00254nam a2200121Ia 4500082002000000100001900020245003100039250000900070260002700079300001600106500000500122700000500127  a519.537bK33.RC  aKendall, M. G.  aRank correlation methodsb  a3rd.  aNew YorkbHafnerc1962  aviii, 199p.  a  a