@misc{_Przegląd_1977,
 copyright={Rights Reserved - Free Access},
 address={Warszawa},
 journal={Przegląd Geograficzny},
 howpublished={online},
 year={1977},
 publisher={IGiPZ PAN},
 language={pol},
 language={eng},
 title={Przegląd Geograficzny T. 49 z. 3 (1977)},
 type={Text},
 URL={http://www.rcin.org.pl/igipz/Content/14199/PDF/WA51_16280_r1977-t49-z3_Przeg-Geogr.pdf},
 keywords={Torsten Haegerstrand, natural increase, migration, population density, Greek emigrants, grain size, soil degradation, space economy, expeditions, Spitsbergen, Warsaw agglomeration, Poland},
}