Sap yields from fall and spring tapping of sugar maple
By: by Melvin R. Koelling.
Series: Research paper NE -- 115.
Publisher: Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1968
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Sugar maple -- Tapping; Maple sugar
Notes: Cover title.

Includes bibliographical references.