Bird Flight Performance: A Practical Calculation Manual.
By C. J. Pennycuick. Clarendon: 1989. Pp.153. £25, $49.95.
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McMahon, T. Keeping them up in the air. Nature 342, 628 (1989). https://doi.org/10.1038/342628a0
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DOI: https://doi.org/10.1038/342628a0