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Breeding success and population growth in a colony of Herring and Lesser Black-backed Gulls Larus argentatus and L. fuscus
Author: Brown, R. G. B.
Call no: RP11563
Year: 1967
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Species isolation between the Herring Gull Larus argentatus and Lesser Black-backed Gull L. fuscus
Author: Brown, R. G. B.
Call no: RP11564
Year: 1967
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