New plastic apron-gutter for gum collection
By: Ralph W. Clements and H. Grady Williams.
Contributors: Williams, H. Grady.; Southeastern Forest Experiment Station (Asheville, N.C.)
Series: Forest Service research note SE -- 304.
Publisher: Southeastern Forest Experiment Station
Published: 1981
Place of publication: [Asheville, N.C
Language: eng
Subjects: Gutters.; Sap.
Notes: Caption title.

"February 1981."