Artificial light sources differ in effect on birch seedling growth
By: [David A. Marquis]
Contributors: Northeastern Forest Experiment Station (Radnor, Pa.)
Series: U.S. forest service research note -- NE-35; USDA Forest Service research note NE -- 35.
Publisher: Northeastern Forest Experiment Station, Forest Service, U. S. Dept. of Agriculture
Published: 1965
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Birch; Seedlings; Effect of light on
Notes: Caption title.

Includes bibliographical references (p. 6).

Also available online.