Future forest trees; or, The importance of the German experiments in the introduction of the North American trees Unwin, Arthur Harold, 1878- creator text book London T.F. Unwin 1905 1905
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ENG Forests and forestry Germany North America Plant introduction Trees SD195 U6 https://www.biodiversitylibrary.org/bibliography/27466 10.5962/bhl.title.27466 OTU