Tippett, L.H.C.
The methods of statistics
Williams and Norgate, 1952
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Fraser, D.A.S.
Statistics: an introduction
John Wiley & Sons, 1967
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Croxton, Frederick E.
Applied general statistics
Prentice-Hall, 1960
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Fisher, Ronald A.
Statistics methods for research workers
Oliver and Boyd, 1950
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Yamane, Taro
Statistics : an introductory analysis
New York University, 1967
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