The Visible Migration of Birds at Ottenby, Sweden.
Edited by Carl Edelstam. Drawings by Harald Wiberg. Pp. 360. (Swedish Ornithological Association: Stockholm, 1972.) 95 Sw. cr.
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MATTHEWS, G. Ornithological Statistics. Nature 246, 50 (1973). https://doi.org/10.1038/246050a0
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DOI: https://doi.org/10.1038/246050a0