A coloured key to the wildfowl of the world.
[Slimbridge]: Wildfowl Trust, (1961. revised edition). Octavo, wrappers, colour plates by the author. Cover a little grubby.
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[Slimbridge]: Wildfowl Trust, (1961. revised edition). Octavo, wrappers, colour plates by the author. Cover a little grubby.
.