00419nam a2200121Ia 4500082001900000100006400019245013000083260003000213300001300243490003100256500000500287700000500292  a304.6bUn58.CS  aUnited Nations. Economic and Social Affairs, Department of-  aConcept of a stable population; application to the study of populations of countries with incomplete demographic statisticsb  aNew YorkbThe Auth.c1968  ax, 237p.  aPopulation studiesv no.39  a  a