The Birds of Africa, Vol. III.
Edited by C. Hilary Fry Stuart Keith and Emil K. Urban. Academic:1988. Pp. 611. £71.50, $129.
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Perrins, C. Three down˙ ˙ ˙. Nature 335, 214 (1988). https://doi.org/10.1038/335214a0
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DOI: https://doi.org/10.1038/335214a0