Principles of the mathematical theory of correlation, Mathematical theory of correlation. Chuprov, Aleksandr Aleksandrovīch, 1874-1926. [from old catalog] Kantorowitz, Myron, 1895- [from old catalog] tr. Correlation (Statistics) HA33 .C52 311.25 STP London [etc.] W. Hodge and company, limited, 1939. 1939. 1939 Text x, 194 p. eng