@misc{Wielka_Brytania._War_Office._Wydawca_Sierra_1949, author={Wielka Brytania. War Office. Wydawca}, copyright={Public Domain}, address={[Miejsce nieznane]}, address={([Miejsce nieznane]}, journal={GSGS Misc}, howpublished={online}, year={1949}, publisher={published at the War Office}, publisher={printed by O.S.)}, language={eng}, title={Sierra Leone : scale 1:500,000}, type={Image}, URL={http://www.rcin.org.pl/igipz/Content/204492/PDF/WA51_188385_PTGD1-r1949_Sierra-Leone-scale.pdf}, keywords={chorographic maps, Sierra Leone}, }