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Article
G.L. Atkinson-willes 1976Bull ONC 6 p3-81
Article
G.L. Atkinson-willes 1969Wildfowl, 20
Article
Wildfowl Trust Annual Report, 12A method is described of obtaining indices to represent the relative abundance of ducks in the same m onth of different years and in each season as a whole. Results are based on the sample which has been used since September 1959 to produce m on[...]
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