Plastic tubing for collecting maple sap : a comparison of suspended vented and unvented installations /

Bibliographic Details
Main Author:	Blum, Barton M.
Format:	Government Document Book
Language:	English
Published:	Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1967.
Series:	U.S. Forest Service research paper NE ; 90.
Subjects:	Sugar maple > Tapping > Equipment and supplies.

Description
Item Description:	Cover title.
Physical Description:	13 pages : illustrations ; 23 cm.