Souza, M., & Oliveira, V.
(2008).
OS ENCLAVES ÚMIDOS E SUB-ÚMIDOS DO SEMI-ÁRIDO DO NORDESTE BRASILEIRO (humid and sub-humid segments of the semi-arid area of the brazilian northeast).
Mercator, 5(9).
Retrieved from http://www.mercator.ufc.br/mercator/article/view/91