• publisher: [Portland, Or.?] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
  • creator: Copes, Donald L Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
  • contributor: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
  • Keyword: Douglas fir. Grafting. Roots (Botany)
  • years: [1981]
  • pages: 8 p. :
  • notes: Caption title.
  • download: pdf file