Lindgren, Bernard W.
Statistical theory
Macmillan, 1968
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Aitken, A.C.
STatistical mathematics
Oliver and Boyd , 1974
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Larson, Harold J., 1934-
Introduction to probability theory and statistical inference
John Wiley & Sons, 1974
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Snedecor, George W.
Statistical methods
Iowa State University Press, 1989
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Snedecor, George W.
Statistical methods
The Iowa State University Press, 1980
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