Dey, Aloke . Orthogonal Fractional Factorial Design / Textual Documents Aloke Dey. - 1st ed / - New Delhi : Wiley Eastern , 1985. - 133p. ; 20 cm. ISBN: 0 85226 165 9 Subjects--Index Terms: Mathematics T/G-Mathematics Dewey Class. No.: 510 / De 53 Or