Growth of hybrid poplars, white spruce, and jack pine under various artificial lights
By: Pamela S. Roberts and J. Zavitkovski
Contributors: Zavitkovski, J; North Central Forest Experiment Station (Saint Paul, Minn.)
Series: Research paper NC -- 206
Publisher: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
Published: 1981
Place of publication: St. Paul, Minn
Language: eng
Subjects: Jack pine -- Growth; White spruce -- Growth; Artificial light gardening
Notes: Bibliography: p. 5