Comparison of vacuum and gravity sap flows from paired sugar maple trees
By: [H.Clay Smith and Carter B. Gibbs]
Contributors: Gibbs, Carter B.; Northeastern Forest Experiment Station (Radnor, Pa.)
Series: USDA forest service research note -- NE-122; USDA Forest Service research note NE -- 122.
Publisher: Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1970
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Maple syrup industry
Notes: "Literature cited": p. 4.

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