Techniques for evaluating Bacillus thuringiensis and spray equipment for aerial application against forest defoliating insects
By: Bohdan Maksymiuk and R. D. Orchard
Contributors: Orchard, R. D.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: USDA Forest Service research paper PNW -- 183
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1974
Place of publication: Portland, Or
Language: eng
Number of pages: 13
Subjects: Aerial spraying and dusting in agriculture -- United States.; Defoliation.; Douglas fir tussock moth.; Spruce budworm.
Notes: Cover title

Bibliography: p. 13