Die Entenvogelzählung in Deutschland, 1948 bis April 1953.
Series: Biologische Abhandlungen,; Heft 10
Publisher: H. Bruns]
Published: 1954
Place of publication: [Würzburg-Versbach
Language: ger
Number of pages: 40
Subjects: Ducks.; Birds -- Migration.
Notes: Includes bibliography.