Accounting for the Impacts of Public Research, R&D Spill-ins, Extension, and Roads in U.S. Regional Agricultural Productivity Growth, 1980-2004

Authors

Ling Sun Wang, ERS, USDA
Eldon Ball, ERS, USDA
Lilyan E. Fulginiti, University of Nebraska-LincolnFollow
Alejandro Plastina, Iowa State University

Document Type

Article

Date of this Version

2012

Citation

chapter 2 in Productivity Growth in Agriculture: An International Perspective, edited by Keith Fuglie, Eldon Ball, and Sun Ling Wang, CABI, 2012