Plastic tubing for collecting maple sap
Subtitle: a comparison of suspended vented and unvented installations
By: by Barton M. Blum.
Series: Research paper NE -- 90.
Publisher: Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1967
Place of publication: Upper Darby, Pa
Language: eng
Number of pages: 13
Subjects: Sugar maple -- Tapping -- Equipment and supplies
Notes: Cover title.