Research in mechanical farm equipment
By: [by H.B. Walker].
Series: Miscellaneous publication / United States Department of Agriculture -- no. 38; Miscellaneous publication (United States. Dept. of Agriculture) -- no. 38.
Publisher: U.S. Dept. of Agriculture
Published: 1928
Place of publication: Washington, D.C
Language: eng
Number of pages: 43
Subjects: Agricultural machinery -- Research.; Farm equipment -- Research.
Notes: Cover title.

"December, 1928."

Bibliography: p. 42.