@misc{Riedel_Adolf_(1930–2010)_Die_1975, author={Riedel, Adolf (1930–2010)}, volume={20}, number={11}, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Fragmenta Faunistica}, howpublished={online}, year={1975}, publisher={Państwowe Wydawnictwo Naukowe}, language={ger}, language={pol}, language={rus}, type={Text}, title={Die Zonitiden-Fauna Bulgariens (Gastropoda), ihre Herkunft und Verbreitung}, URL={http://rcin.org.pl/miiz/Content/46939/PDF/WA058_50730_P256-T20_Frag-Faun-Nr-11.pdf}, keywords={Oxychilidae, Zonitidae, Bulgaria, Gastropada, gastropods, snails, molluscs, mollusks, Mollusca, research, bibliography, geographical distribution}, }