Households’ Willingness to Pay for Water Hyacinth Control in Lake Tana. Ethiopian Journal of Economics, [S. l.], v. 31, n. 2, p. 125–154, 2023. Disponível em: https://ethiopianjournalofeconomics.org/index.php/EJE/article/view/247.. Acesso em: 15 jul. 2026.