Initial releases of Chrysocharis laricinellae and Dicladocerus westwoodii for biological control of the larch casebearer in the Western United States
By: by R.B. Ryan and R.E. Denton.
Contributors: Denton, Robert E.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note PNW -- 200.; Research note PNW -- 200.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1973
Place of publication: Portland, Or
Language: eng
Subjects: Larch casebearer -- Biological control -- West (U.S.); Larches -- Diseases and pests -- West (U.S.)
Notes: "April 1973".

Cover title.

Includes bibliographical references (p. 4).