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Progress in Essential Oils

Brian M. Lawrence

There are seven species of Pseudotsuga found in theri natural environment of eastern Asia and western North America (Airy Shaw, 1966). The taxonomic origin of Douglas fir is Pseudotsuga menziesii (Mirb.) Franco. This tree is highly valued in the timber industry of western North America because of its rapid growth rate.

This is only an excerpt of the full article that appeared in P&F Magazine. The full content is not currently available online.

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