Extension work in agricultural engineering, 1923
By: Guy Ervin
Series: Department circular / United States Department of Agriculture -- 344; Department circular (United States. Dept. of Agriculture) -- 344.
Publisher: U.S. Dept. of Agriculture
Published: 1925
Place of publication: Washington, D.C
Language: eng
Number of pages: 10
Subjects: Agricultural engineering; Agricultural extension work
Notes: Caption title.