by Walter T. Federer | .
by Damaraju Raghaba Rao | .
by | .
by George W. Snedecor | William G. Cochran.
by Arun Ghosh & Ranjit Ghosh | .
by J.K. Galbraith | .
by M.R. Chaudhuri | .
by J.T. Panikar | .
by Fred E. D'Amour | .
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