Releases of recently imported larch casebearer parasites for biological control in the western United States, including relocations of Agathis pumila
By: by R.B. Ryan ... [et al.].
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research note PNW -- 290; USDA Forest Service research note PNW -- 290.
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1977
Place of publication: Portland, Or
Language: eng
Subjects: Control; Larch casebearer
Notes: Chiefly statistical tables.

Caption title.

"February 1977."

Includes bibliographical references (p. 8).