Spruce budworm increasing in Minnesota
By: James L. Bean, Hart Graeber
Contributors: Graeber, Hart; Lake States Forest Experiment Station (Saint Paul, Minn.)
Series: Technical notes / Lake States Forest Experiment Station -- no. 479; Technical notes (Lake States Forest Experiment Station (Saint Paul, Minn.)) -- no. 479.
Publisher: Lake States Forest Experiment Station
Published: 1957
Place of publication: St. Paul, Minn
Language: eng
Subjects: Spruce budworm; Choristoneura fumiferana
Notes: Caption title.