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Books about Keyfitz:
KEYFITZ, NATHAN: An entry from Macmillan Reference USA's Encyclopedia of Population by Jacques Ledent (2003)
Applied Mathematical Demography (Statistics for Biology and Health) 3rd (third) Edition by Keyfitz, Nathan, Caswell... (0010)
Levels of error in population forecasts: Comments upon Nathan Keyfitz's paper "On future population." (Arbeidsnotter... by Jan M Hoem (1972)
Wiki information Keyfitz:
Nathan Keyfitz FRSC FRSS was a Canadian demographer, a pioneer of mathematical demography.
Barbara Lee Keyfitz is a Canadian-American mathematician, the Dr. Charles Saltzer Professor of Mathematics at Ohio State University. In her research, she studies nonlinear partial differential equations and associated conservation laws.