@misc{_Przegląd_1967, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Przegląd Geograficzny}, howpublished={online}, year={1967}, publisher={IGiPZ PAN}, language={pol}, language={eng}, title={Przegląd Geograficzny T. 39 z. 1 (1967)}, type={Text}, URL={http://rcin.org.pl/igipz/Content/8673/PDF/WA51_16388_r1967-t39-z1_Przeg-Geogr.pdf}, keywords={Stanisław Leszczycki, economic geography, economic region, theory of geography, theory of economic geography, regional divisions, factor analysis, measures of concentration, regional statistics}, }