@book{bhlpg31085809, title = {1997 IUCN red list of threatened plants }, volume = {1997}, url = {https://www.biodiversitylibrary.org/page/31085809}, publisher = {}, author = {}, year = {1997}, pages = {Page 450}, } @book{bhlpg38687539, title = {An environmental profile of the Black Sea Coast }, volume = {1997}, url = {https://www.biodiversitylibrary.org/page/38687539}, publisher = {WCMC}, author = {Gillett, Harriet J. }, year = {1997}, pages = {Page 32}, } @book{bhlpg44206416, title = {Für die litteratur und kenntniss der naturgeschichte, sonderlich der conchylien und der steine }, volume = {Bd. 1 (1782)}, url = {https://www.biodiversitylibrary.org/page/44206416}, publisher = {Bey C.L. Hoffmanns sel. wittwe und erben}, author = {Schröter, Johann Samuel, 1735 -1808}, year = {1782}, pages = {Page 55}, } @book{bhlpg31186090, title = {List of rare, threatened and endemic plants in Europe (1982 edition) }, volume = {1983}, url = {https://www.biodiversitylibrary.org/page/31186090}, publisher = {}, author = {}, year = {1983}, pages = {Page 353}, } @book{bhlpg31186076, title = {List of rare, threatened and endemic plants in Europe (1982 edition) }, volume = {1983}, url = {https://www.biodiversitylibrary.org/page/31186076}, publisher = {}, author = {}, year = {1983}, pages = {Page 339}, } @book{bhlpg1694141, title = {Proceedings of the Academy of Natural Sciences of Philadelphia }, volume = {v.7 (1854-1855)}, url = {https://www.biodiversitylibrary.org/page/1694141}, publisher = {Academy of Natural Sciences of Philadelphia}, author = {Academy of Natural Sciences of Philadelphia. }, year = {1854}, pages = {Page 30}, }