Extension work in agricultural engineering, 1922
By: George T. Boyd
Series: Department circular / United States Department of Agriculture -- 270; Department circular (United States. Dept. of Agriculture) -- 270.
Publisher: U.S. Dept. of Agriculture
Published: 1924
Place of publication: Washington, D.C
Language: eng
Number of pages: 16
Subjects: Agricultural extension work; Agricultural engineering
Notes: Includes bibliographical references.