Vertical distribution of cones in red pine
By: [John S. Hard]
Series: Research note LS / Lake States Forest Experiment Station -- 51; Research note LS -- 51.
Publisher: Lake States Forest Experiment Station, U.S. Dept. of Agriculture
Published: 1964
Place of publication: St. Paul, Minn
Language: eng
Subjects: Red pine; Pine cones
Notes: Caption title.

"October 1964"--P. [2].

Includes bibliographical references.