Field test with helicopter applications of Gardona against gypsy moth in Pennsylvania
By: by Jack H. Barger and Kenneth Helrich.
Contributors: Helrich, Kenneth, 1924-
Series: Research paper NE -- 314.
Publisher: Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station
Published: 1975
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Gypsy moth -- Control -- Pennsylvania; Aerial spraying and dusting in forestry -- Pennsylvania
Notes: Bibliography: p. 6.