. The distribution of important forest trees of the United States. Forests and forestry; Trees. 75 N dak. I. SWAMP COTTONWOOD Fhpu/us heterophylla MILES Map 71 POPULITS HETEROPHYLLA LINNAEUS SWAMP COTTONWOOD. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Munns, E. N. (Edward Norfolk), 1889-1972. Washington, D. C. : U. S. Dept. of Agriculture

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Keywords: ., bookcentury1900, bookpublisherwas, booksubjectforestsandforestry