na INLIS000000000030222 Ind 0010-1218012060 Experimental designs COCHRAN, William G William G.Cochran; Gertrude M.Cox New York John Wiley Sons 1957 xiv, 611p.:ill.; 23cm xiv, 611p.:ill.; 23cm 519.2COCe Bibl: p. 599-601. Index: p. 604-611 519.2 Mathematical methods 105/67