. Bulletin. Forests and forestry -- United States. a A. Cross Section of Wild Tree. a, mother bark layer. /*, wild cork. B.—Cross Section of Decorticated Tree. a, mother bark layer. b, commercial cork. Used in 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