Testing sugar maple sap for sweetness with a refractometer
By: [H.Clay Smith and George M. Keiser]
Contributors: Keiser, George M.; Northeastern Forest Experiment Station (Radnor, Pa.)
Series: USDA Forest Service research note -- NE-138; USDA Forest Service research note NE -- 138.
Publisher: Northeastern Forest Experiment Station, Forest Service, U. S. Dept. of Agriculture
Published: 1971
Place of publication: Upper Darby, Pa
Language: eng
Subjects: Sugar maple; Sap
Notes: Caption title.

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