Labor requirements of dairy farms as influenced by milking machines
By: by Harold N. Humphrey
Series: Bulletin / United States Department of Agriculture -- no. 423; Bulletin of the U.S. Department of Agriculture -- no. 423.
Publisher: U.S. Dept. of Agriculture
Published: 1916
Place of publication: Washington, D.C
Language: eng
Number of pages: 17
Subjects: Dairying; Equipment and supplies; Dairy workers
Notes: Caption title.

"November 25, 1916."

"Professional paper."