Effects of defoliation, girdling, and severing of sugar maple trees on root starch and sugar levels
By: Johnson Parker.
Contributors: Northeastern Forest Experiment Station (Radnor, Pa.)
Series: USDA Forest Service research paper NE -- 306.
Publisher: U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station
Published: 1974
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Defoliation.; Sugar maple.
Notes: Cover title.

Bibliography: p. 4.