A century of productivity change in U.S. agriculture
Subtitle: an analysis of the role of invention, research and extension
By: Robert E. Evenson
Series: Center discussion paper -- no. 296; Center discussion paper -- no. 296.
Publisher: Economic Growth Center, Yale University
Published: 1978
Place of publication: New Haven, Conn
Language: eng
Number of pages: 77
Subjects: Agricultural productivity
Notes: Cover title.

"Prepared for the Symposium on Agricultural Research and Extension Evalustion, Moscow, Idaho, May 21-31, 1978."

Includes bibliographical references (p. 75-77).