"Pacific Northwest Forest and Range Experiment Station (Portland, Or.)" . . "Bark beetles Idaho." . . "Defoliation." . . "Washington (State)" . . "Bark beetles." . . "Idaho." . . "Douglas fir tussock moth." . . . . . . . . "Effect of defoliation by the Douglas-fir tussock moth on moisture stress in grand fir and subsequent attack by the fir engraver beetle (Coleoptera: scolytidai)"@en . "Effect of defoliation by the Douglas-fir tussock moth on moisture stress in grand fir and subsequent attack by the fir engraver beetle (Coleoptera : Scolytidae)" . . . . . . . . . "Effect of defoliation by the Douglas-fir tussock moth on moisture stress in grand fir and subsequent attack by the fir beetle (Coleoptera: Scolytidae)" . . . . . . . . . . . . . . . . . . . . "Effect of defoliation by the Douglas-fir tussock moth on moisture stress in grand fir and subsequent attack by the fir engraver beetle (Coleoptera: scolytidae)"@en . . "Bark beetles Washington (State)" . . . . "United States. Forest Service." . . "Fir Diseases and pests Washington (State)" . . "Fir Diseases and pests." . . "Fir Diseases and pests Idaho." . .