Dublin, Louis Isreal Length of life: a study of the life tale / Louis I Dublin, Alfred J Lotka and Mortimer Spiegelman - Rev ed - New York : Ronald Press, 1949 - xxv, 379p. map. diagrs. 24cm. Subjects--Topical Terms: LongevityMortalitystatistics--Charts, Diagrams.Vital statistics Dewey Class. No.: 304.6 / DUB