RUBEN, Ruerd. Farming Systems in Less-favored Areas: Strategies for Sustainable Resource Use and Poverty Alleviation 1. Annals of Arid Zone, India, v. 44, n. 3 & 4, 2016. Disponível em: https://epubs.icar.org.in/index.php/AAZ/article/view/66141. Acesso em: 3 nov. 2025.