HUFFMAN, W. New insights on the Impacts of Public Agricultural Research and Extension on Agricultural Productivity: Evidence from the United States. Cuyonomics. Investigaciones en Economía Regional, [S. l.], v. 1, n. 1, p. 39–49, 2017. Disponível em: https://revistas.uncu.edu.ar/ojs3/index.php/cuyonomics/article/view/1081. Acesso em: 4 may. 2024.