Beetham, 1912, On the positions assumed by birds in flight

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Original title On the positions assumed by birds in flight
Simple title On the positions assumed by birds in flight
Authors Bentley Beetham
Date 1912
Countries GB
Languages en
Keywords positions assumed by birds in flight
Journal Smithsonian Annual Report, British Birds, Aër. Journ
Related to aircraft?
Page count 30
Word count
Wikidata id

Sources

  • Brockett (1921), page 133, entry 13: Beetham, Bentley. On the positions assumed by birds in flight. Washington, 1912, Smithsonian Annual Report 1911, pp. 433-439, ill. British Birds, Vol. 4, June 1910-May 1911, Witherby & Co., Lond