Impact of the douglas-fir tussock moth on forest recreation in the blue mountains
Downing, K.B., Delucchi, P.B.
Impact of the douglas-fir tussock moth on forest recreation in the blue mountains - Oregon 1977 - 1-14 p. - Forest, Moth, Mountains United States Department of Agriculture, Forest Service Research Paper PNW-224 .
Impact of the douglas-fir tussock moth on forest recreation in the blue mountains - Oregon 1977 - 1-14 p. - Forest, Moth, Mountains United States Department of Agriculture, Forest Service Research Paper PNW-224 .