@misc{Mazgajski_Tomasz_D._Zmiany_1997, author={Mazgajski, Tomasz D.}, volume={R. 54}, editor={Institute of Nature Conservation of the Polish Academy of Sciences}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Kraków}, journal={Protection of Nature}, howpublished={online}, year={1997}, language={pol}, type={Text}, title={Zmiany liczebności i miejsca gniazdowania dzięcioła dużego Dendrocopos major i średniego D. medius w rezerwacie "Las Bielański" w Warszawie}, title={Changes in the numbers and nest sites of the Great Spotted Woodpecker Dendrocopos major and Middle Spotted Woodpecker D. medius in the Las Bielański Reserve in Warsaw}, URL={http://rcin.org.pl/iop/Content/121355/PDF/KR038_113527_r1997-r54_OP-Mazgajski-155-160.pdf}, keywords={Great Spotted Woodpecker, Middle Spotted Woodpecker, Dendrocopos major, Dendrocopos medius, Las Bielański}, }