Ord, J. K. Families of frequency distributions/ [by] J. K. Ord. - New York: Hafner, 1972. - viii, 231 p.: 22 cm. - Griffin's statistical monographs & courses; no. 30 . Bibliography: p. 211-228. LCCN: 73159459 Subjects--Topical Terms: Distribution (Probability theory) Dewey Class. No.: 519.5/32