@misc{_Przegląd_1961,
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Przegląd Geograficzny},
 howpublished={online},
 year={1961},
 publisher={IGiPZ PAN},
 language={pol},
 language={eng},
 title={Przegląd Geograficzny T. 33 z. 4 (1961)},
 type={Text},
 URL={http://www.rcin.org.pl/Content/8651/PDF/WA51_16413_r1961-t33-z4_Przeg-Geogr.pdf},
 keywords={theory of geography, theory of economic region, mathematical methods, population, textile industry, transportation, geography of forestry, commuting, Bulgaria, Poland},
}