Iowa`s population
Doerflinger, Jon, Klimek, Ronald
Iowa`s population recent trends and future prospects - Ames 1966 - 1-39 p. - Population Iowa Agricultural Experiment Station. Special Report No. 47 .
Iowa`s population recent trends and future prospects - Ames 1966 - 1-39 p. - Population Iowa Agricultural Experiment Station. Special Report No. 47 .