title: [Internal migration studies].
mesh_terms: D003625:Data Collection; D003710:Demography; D019049:Developed Countries; D004467:Economics; D004641:Emigration and Immigration; D005060:Europe; D005061:Europe, Eastern; D007182:Income; D011044:Poland; D011153:Population; D011157:Population Dynamics; D012106:Research; D012959:Socioeconomic Factors
keywords: Data Collection; Data Sources; Demographic Factors; Developed Countries; Eastern Europe; Economic Conditions; Economic Factors; Europe; Income; Macroeconomic Factors; Migration; Migration, Internal; Poland; Population; Population Dynamics; Research Methodology; Socioeconomic Factors
vernacular_title: Badanie migracji wewnetrznych.