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Progress report 1971
International Biological Programme
Bok Engelsk 1971
Handbook to the Conservation Section of the International Biological Programme
compiled by E.M. Nicholson
Bok Engelsk 1968
Birds and men : the bird life of British towns, gardens and farmland
by E.M. Nicholson
Bok Engelsk 1951
How birds live : a brief account of bird-life in the light of modern observation
Nicholson, E.M.
Bok Engelsk 1929