Using forest knowledge : how silviculture can benefit from ecological knowledge systems about beargrass harvesting sites / S. Hummel, F.K. Lake, A. Watts.
Publication Info.
Portland, OR : United States Department of Agriculture, Forest Service, Pacific Northwest Research Station, June 2015.
"This booklet describes how knowledge gained from a tri-state study of good harvesting sites of a popular forest understory plant can contribute to local silvicultural decisions about tree density and levels of down wood"--Page 1.