Dublin, Louis I. Length of life : A study of the life table / Louis I. Dublin, Alfred J. Lotka & Mortimer Spiegelman - Rev. ed. - New York : Ronald ; 1949 - xxv, 379p. : ill. ; 21 cm. Includes Table and index. Subjects--Topical Terms: DemographyLifeMortality Dewey Class. No.: 312.2 / DUB