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  1. ... Virginia contains the largest reserve supply of timber . In the Ridge -and-Valley region of the Appalachian Mountains, the ...

    分類:社會與文化 > 語言 2008年03月18日

  2. ...2000 meters of the mountain, scattered along the ridge , or Mixed broadleaf conifer species, not a pure...province Jieke planting. . Purposes: a timber uses: sapwood yellowish brown heartwood; wood is also...

    分類:社會與文化 > 語言 2015年01月09日