Zur Theorie des Vogelzuges
Geyr von Schweppenburg, H. Freiherr (Hans) 1884-1963
Article
1922
Journal für Ornithologie
70
361--385
BioStor
German
Berlin, Friedländer,
BioStor: https://biostor.org/reference/201438 DOI: https://doi.org/10.1007/bf02537519
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