Zonas Regables Según Criterio Físico Climático. Salinas. [Irrigation Areas According to Physico-Climatic Criteria] Continent: South AmericaCountry: Ecuador
Overzichtsbodemkaart van Noord-Suriname ten noorden van de 5e breedtegraad. Kaartblad 5. [Reconnaissance Soil Map of the Northern Suriname north of the 5th degree of latitude] Map Sheet 5. Continent: South America
Mapa de Formaciones Vegetales y Uso Actual. Guayaquil. [Vegetation forms and actual land use map] Continent: South AmericaCountry: Ecuador
Boa Vista Roraima. Mapa de Uso Potencial da Terra. Folha NA./NB.20. Volume 8. Continent: South AmericaCountry: Brazil
South America. Potential Population Supporting Capacities (Average Densities). Intermediate Levels of Inputs. Continent: South America