Tile-trenching machinery /

Bibliographic Details

Main Author:	Yarnell, D. L. (David Leroy)
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. Dept. of Agriculture, 1931.
Edition:	Rev. Jan. 1931.
Series:	Farmers' bulletin (United States. Department of Agriculture) ; no. 1131.
Subjects:	Trenching machinery.