@misc{Eberhardt_Piotr_(1935–2020)_Problematyka_1997, author={Eberhardt, Piotr (1935–2020)}, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Zeszyty Instytutu Geografii i Przestrzennego Zagospodarowania PAN}, howpublished={online}, year={1997}, publisher={IGiPZ PAN}, language={pol}, language={eng}, title={Problematyka narodowościowa Estonii = The ethnic problems in Estonia}, type={Text}, URL={http://www.rcin.org.pl/igipz/Content/34409/PDF/WA51_44753_r1997-nr47_Zeszyty-IGiPZ.pdf}, keywords={population, ethnic structure, national minorities, Estonia}, }