@misc{_Acta_1993, editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii}, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Acta Ornithologica}, howpublished={online}, year={1993}, publisher={Muzeum i Instytut Zoologii PAN}, language={eng}, language={pol}, language={rus}, title={Acta Ornithologica ; vol. 28 - Spis treści}, type={Text}, URL={http://rcin.org.pl./Content/42440/PDF/WA058_31731_P257-T28_Acta-Ornith-Spis-t28.pdf}, keywords={Poland, birds, periodicals, ornithology}, }