@misc{_Polar_[między,
 copyright={Public Domain},
 address={London},
 howpublished={online},
 year={[między 1918 i 1938]},
 publisher={George Philip & Son, Ltd.},
 publisher={The London Geographical Institute},
 language={eng},
 title={Polar regions : Scale 1:35.000.000},
 type={Image},
 URL={http://rcin.org.pl/Content/218540/PDF/WA51_226395_PTGD55-r1918_Polar-regions_0001.pdf},
 keywords={chorographic maps, exploration, discoveries, polar regions, Antarctica, Arctica},
}