Nascimento, Flávio Rodrigues do, Marcos José Nogueira de Souza, and Maria Lúcia Brito da Cruz. 2007. “FOCUS GEOENVIRONMENT FOR THE TREATMENT OF DEGRADATION DESERTIFICATION IN THE MUNICIPAL DISTRICT OF SOBRAL - NORTHEAST OF BRASIL CEARÁ”. Ateliê Geográfico Journal 1 (2). Goiânia:80-101. https://doi.org/10.5216/ag.v1i2.3015.