August-collected cones yield poor red pine seed
By: [Eugene I. Roe]
Contributors: Lake States Forest Experiment Station (Saint Paul, Minn.)
Series: Technical notes / Lake States Forest Experiment Station -- no. 575; Technical notes (Lake States Forest Experiment Station (Saint Paul, Minn.)) -- no. 575.
Publisher: Lake States Forest Experiment Station
Published: 1960
Place of publication: St. Paul, Minn
Language: eng
Subjects: Red pine; Pinus resinosa; Seeds; Seed cones
Notes: Caption title.