Aristides, Saavedra G., and L. Daniel M. Lopez. “Physiographic Analysis As a Conceptual Approach for the Integrated Study of the Landscape. A Case Study of the Usumacinta River Watershed, Mexico”. European Journal of Applied Sciences 10, no. 4 (July 28, 2022): 247–261. Accessed May 30, 2026. https://scholarpublishing.org/journals/index.php/EJAS/article/view/8436.