Fluggeräusche bei der Trauerente (Melanitta nigra)

• Main Author: Beckmann
• Format: Text
• Language: German
• Published: 1953
• Subjects: Melanitta nigra
• Online Access: http://nbn-resolving.org/urn:nbn:de:hebis:30:4-201857; http://nbn-resolving.de/urn:nbn:de:hebis:30:4-201857

Karl Otto Beckmann, Kiel