Changes in farm power and equipment: field implements
By: by Eugene G. McKibben, John A. Hopkins and R. Austin Griffin. Work projects administration, National research project.
Contributors: Hopkins, John A. 1897- joint author.; Griffin, Reuben Austin, 1903- joint author.
Series: National research project on reemployment opportunities and recent changes in industrial techniques ... Studies of changing techniques and employment in agriculture ... [Report no. A-11]
Published: 1939
Place of publication: Philadelphia, Pa
Language: eng
Number of pages: 111
Subjects: Agricultural machinery.
Notes: Bibliographical foot-notes.
Photoprinted.
Issued also in Changes in farm power and equipment: tractors, trucks, automobiles, field implements, mechanical cotton picker (National research project on reemployment opportunities and recent changes in industrial techniques) [1937-39]