Observations on the use of GYPCHEK
By: by F. B. Lewis ... [et al.]
Contributors: Lewis, Franklin B; United States. Forest Service
Series: USDA Forest Service research paper NE -- 447
Publisher: Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station
Published: 1979
Place of publication: Broomall, Pa
Language: eng
Subjects: Aerial spraying and dusting in agriculture -- United States; Gypsy moth -- Biological control -- United States
Notes: Bibliography: p. 8