Susceptibility of 10 spruce species and hybrids to the white pine weevil (Sitka spruce weevil) in the Pacific Northwest
By: R.G. Mitchell, N.E. Johnson, and K.H. Wright.
Contributors: Wright, Kenneth H.; Johnson, Norman E.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 225.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1974
Place of publication: Portland, Or
Language: eng
Subjects: White pine -- Diseases and pests -- Northwest, Pacific.
Notes: Cover title.

"May 1974."

Includes bibliographical references (p. 7-8).