Keyfitz, Nathan Demography through problems: Nathan Keyfitz, John A. Beekman. - New York : Springer-Verlag, 1984 - viii, 141 p. : ill. ; Includes index. Bibliography: p. 135-136. ISBN: 0387908366 Subjects--Topical Terms: Demography Dewey Class. No.: 304.6076 / KEY