. Bulletin. Forests and forestry -- United States. Bulletin Nn. 13, Division of Forestry. Plate U. x^L-ZaL ~ i'Vi ?i I £>--\P\U. xr PiNUS HETEROPHYLLA: CONE AND SEEC. 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 United States. Division of Forestry. Washington : G. P. O.
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Keywords: ., bookpublisherwashingtongpo, booksubjectforestsandforestryunited