Field guide to the common diseases and insect pests of Oregon and Washington conifers /

Bibliographic Details
Main Authors:	Goheen, Ellen Michaels (Author), Willhite, Elizabeth A. (Author)
Corporate Author:	United States. Forest Service. Pacific Northwest Region
Format:	Government Document Book
Language:	English
Published:	[Portland, Or.] : United States Department of Agriculture, Forest Service, Pacific Northwest Region, 2021.
Edition:	Revised edition, 2021.
Series:	R6-NR-FID-PR ; 2021-01.
Subjects:	Conifers > Diseases and pests > Oregon. Conifers > Diseases and pests > Washington (State) Forest insects > Oregon. Forest insects > Washington (State) Conifères > Maladies et fléaux > Oregon. Conifères > Maladies et fléaux > Washington (État) Insectes forestiers > Oregon. Insectes forestiers > Washington (État) Conifers > Diseases and pests. Forest insects. Oregon. Washington (State) field guides. Field guides. Guides d'identification.