-
by Hitchcock, C. Leo (Charles Leo), 1902-1986
Published 1973 -
by Enari, Leonid
Published 1956 -
by Hitchcock, C. Leo (Charles Leo), 1902-1986
Published 1955 -
by Detling, LeRoy E., 1898-1967
Published 1968 -
Journal kept by David Douglas during his travels in North America 1823-1827together 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 his death in 1834Bookby Douglas, David, 1799-1834
Published 1914 -
Journal kept by David Douglas during his travels in North America 1823-1827together 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 his death in 1834Bookby Douglas, David, 1799-1834
Published 1959 -
David Douglasa naturalist at work an illustrated exploration across two centuries in the Pacific NorthwestBookby Nisbet, Jack, 1949-
Published 2012 -
by Nisbet, Jack, 1949-
Published 2009 -
by Douglas, David, 1799-1834
Published 1980