Valér VERES, PhD Babes-Bolyai University Cluj-Napoca, Romania
          Difficulties in Researching the Demographic Behaviour of Ethnic Hungarian and Roma Communities from Romania. Valér VERES, PhD Babes-Bolyai University Cluj-Napoca, Romania. Sociodemographic realities in Romania. Out of 21,7 million people (free self decl.): 9 0% ethnic Romanians
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