PÁJARO HUERTAS, David. Soil Survey and its Relation with Land Type Classification and Cartography by Farmers. meta-carto-semiotics, [S.l.], v. 8, n. 1, p. 14-34, feb. 2017. ISSN 1868-1387. Available at: <http://ojs.meta-carto-semiotics.org/index.php/mcs/article/view/10>. Date accessed: 20 sep. 2020.