@book{bhlitem49325, title = {Die geographische Verbreitung der echten Raben (Corvinae) }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/49325}, note = {https://www.biodiversitylibrary.org/bibliography/14058}, publisher = {Gera, T. Hofmann, 1889}, author = {Diederich, Franz,}, year = {}, pages = {184}, keywords = {Crows|Ravens|}, }