title: [The Ninth Demographic Conference at Roztoky].
mesh_terms: D003226:Congresses as Topic; D003604:Czechoslovakia; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D009026:Mortality; D011153:Population; D011157:Population Dynamics
keywords: Conferences And Congresses; Czechoslovakia; Demographic Factors; Developed Countries; Eastern Europe; Europe; Mortality; Population; Population Dynamics
vernacular_title: IX. Devata. Demograficka Konference v Rostokach