Precision vacuum-type planter head
By: by Jesse E. Harmond
Contributors: United States. Agricultural Research Service
Series: United States. Agricultural Research Service -- ARS42-115; ARS 42 -- 115.
Publisher: United States Department of Agriculture, Agricultural Research Service
Published: 1965
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Planters (Agricultural machinery); Parts; Technological innovations
Notes: Caption title.

"October 1965."

Includes bibliographical references.