TY - JOUR PB - Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section L2 - http://www.czasopisma.pan.pl/Content/98219 PY - 2014 IS - vol. 40 T1 - Methodological assumptions. Determination of the research sample UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/98219 T2 - Studia Regionalia ER -