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

Bibliography: p. 4.