A new method to combat tree diseases
Subtitle: Forest Service researchers develop technique to give trees a 'shot in the bark'
Series: Forestry science photo story -- no. 19; Forestry science photo story -- no. 19.
Publisher: Northeastern Forest Experiment Station
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Control; Trees; Diseases and pests
Other titles: Forest Service researchers develop technique to give trees a 'shot in the bark'.