IGBOABUCHI, N.A. Growth and yield attributes of four varieties of cowpea (Vigna unguiculata L. Walp) in Anambra State, Nigeria. Archives of Agriculture and Environmental Science, [S. l.], v. 2, n. 1, p. 21–24, 2017. Disponível em: https://journals.aesacademy.org/index.php/aaes/article/view/02-01-03. Acesso em: 13 mar. 2026.