Thinning and fertilizing red pine to increase growth and cone production
By: John H. Cooley.
Contributors: North Central Forest Experiment Station (Saint Paul, Minn.)
Series: USDA Forest Service research paper NC -- 42.
Publisher: North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1970
Place of publication: St. Paul, Minn
Language: eng
Subjects: Red pine -- Growth.; Forest thinning.; Forest soils -- Fertilization.
Notes: Cover title.

Includes bibliographical references (p. 7-8).

Also issued online.