Ueber den grauen Geier, Vultur cinereus L., und Rüppell's Geier, Gyps Rüppellii Alfr. Brehm
Article
1854
Journal für Ornithologie
2
70--73
BioStor
Multiple
Berlin, Friedländer,
BioStor: https://biostor.org/reference/141957 DOI: https://doi.org/10.1007/bf02001928
Public domain. The BHL considers that this work is no longer under copyright protection.
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