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Edité par The British Trust for Ornithology, 1969
Vendeur : Shore Books, London, Royaume-Uni
Magazine / Périodique
Soft cover. Etat : Very Good. 64 pages. L J Yeatman "Seasonal fluctuations of a bird population on the coast of the Var, France" / The distribution of the Raven in Britain and Ireland/ J Stafford "The census of heronries, 1962-63" / Raymond Hewson "Roosts and roosting habits of the Dipper" / J D R Vernon " Spring migration of the Common Gull in Britain and Ireland" (SL#83).