00344nam a2200121Ia 4500082001800000100004100018245003400059260003600093300002200129490003300151500000500184700003300189  a510.9bK44.DT  aKeyfita, Nathan and Bookman, John A.  aDemography through problemsb  aNew YorkbSpringer-Verlagc1984  aviii, 414p. Index  aProblem books in Mathematics  a  aBookman, John A. ; jt. auth.