00337nam a2200109Ia 4500008004100000082001700041100002100058245005700079260003300136630001800169650004000187211109s9999||||xx |||||||||||||| ||und||  a519.4bTCH-P  aTchhuprow, A A,  0aPrinciples Of The Mathematical Theory Of Correlation  bNo PublisheraNo Placec1939  xGeneral Stack  aMathematicsvCorrelationxGeneralia