[The demographic situation in Poland in 1987].
Aleksinska
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D003710:Demography; D019049:Developed Countries; D005060:Europe; D005061:Europe, Eastern; D011044:Poland; D011153:Population; D011157:Population Dynamics; D011158:Population Growth
Demographic Factors; Developed Countries; Eastern Europe; Europe; Natural Increase; Poland; Population; Population Dynamics; Population Growth