Hastik R, Geitner C, Neuburger M. Amazonian Dark Earths in Bolivia? A soil study of anthropogenic ring ditches near Baures (eastern Llanos de Mojos). ERDKUNDE [Internet]. 2013 Jun. 30 [cited 2024 Dec. 12];67(2):137-49. Available from: https://journals-test.ulb.uni-bonn.de/index.php/erdkunde/article/view/2725