Initial releases of Chrysocharis laricinellae and Dicladocerus westwoodii for biological control of the larch casebearer in the western United States
Series: U.S. Pacific Northwest Forest and Range Experiment Station. U.S.D.A. Forest Service research note PNW-200
Publisher: Or.
Published: 1973
Place of publication: Portland
Language: eng
Notes: Bibliography: p. 4