[Population interrelationships].
D017677:Age Distribution; D001723:Birth Rate; D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D005843:Geography; D008393:Marriage; D009026:Mortality; D011044:Poland; D011153:Population; D011154:Population Characteristics; D014505:Urban Population
Age Distribution; Birth Rate; Death Rate; Demographic Factors; Developed Countries; Eastern Europe; Europe; Geographic Factors; Marriage Patterns; Poland; Population; Population Characteristics; Urban Population
Stosunki demograficzne