Studies in bird migration
Subtitle: being the collected papers of H. Chr. C. Mortensen, 1856-1921
By: edited by Poul Jespersen and A. Vedel Taning.
Contributors: Jespersen, Poul.; Taning, A. Vedel.
Publisher: Dansk Ornithologisk Forening
Published: 1950
Place of publication: Copenhagen
Language: eng