Zugvögel aus der Palaeartischen und Afrikanischen Region in Südwestafrika
Migrants from the palaearctic and African region in South West Africa. - A study of European migrants in their South West African winter quarters from 11 August 1957 to 5 May 1958 in different middle north and westerly districts in Namibia, with some references to other regions. [ In German ].
Bonner Zoologische Beiträge
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Zugvoegel aus der Palaeartischen und Afrikanischen Region in Suedwestafrika.pdf | 24.13 MB |