Overzichtsbodemkaart van Noord-Suriname ten noorden van de 5e breedtegraad. Kaartblad 9. [Reconnaissance Soil Map of the Northern Suriname north of the 5th degree of latitude] Map Sheet 9. Continent: South America
Leventamento de Reconhecimento dos Solos do Estado do Rio Grande do Sul. Continent: South AmericaCountry: Brazil
Mapa de Asociaciones de Sub-Grupos de Suelos de Costa Rica. ? QUEPOS Continent: South AmericaCountry: Costa Rica