title: [Migration and demographic processes:  theoretical reflection].
mesh_terms: D003710:Demography; D004641:Emigration and Immigration; D005843:Geography; D011153:Population; D011157:Population Dynamics
keywords: Demographic Factors; Geographic Factors; Migration--determinants; Population; Population Dynamics
vernacular_title: Migracje a procesy demograficzne:  refleksja teoretyczna.