Zu: Rösler: Zur Flugbestimmung von Zwergschwan (Cygnus columbianus) und Singschwan (Cygnus cygnus) Orn. Mitt. Nr. 10/1982

• Main Author: Rösler
• Format: Text
• Language: German
• Published: 1983
• Subjects: Cygnus columbianus; Cygnus cygnus
• Online Access: http://nbn-resolving.org/urn:nbn:de:hebis:30:4-177236; http://nbn-resolving.de/urn:nbn:de:hebis:30:4-177236

Ingo Rösler