ALBER, R. What You’ll Need To Know To Use GIS in 2001. Cartographic Perspectives, [S. l.], n. 21, p. 53–56, 1995. DOI: 10.14714/CP21.875. Disponível em: https://cartographicperspectives.org/index.php/journal/article/view/cp21-alber. Acesso em: 27 apr. 2024.