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By "Douglas, David, 1799-1834"
Observations on some species of the genera Tetrao and Ortyx, natives of North America with descriptions of four new species of the former, and two of the latter genus / by David Douglas.
By: Douglas, David,
Publication info: S.l. :s.n.,1828?
Contributed by: Canadiana.org (archive.org)
Journal kept by David Douglas during his travels in North America 1823-1827, together with a particular description of thirty-three species of American oaks and eighteen species of Pinus, with appendices containing a list of the plants introduced by Douglas and an account of h
By: Douglas, David, - Royal Horticultural Society (Great Britain)
Publication info: London :W. Wesley & Son,1914.
Contributed by: University of California Libraries (archive.org)