Suwondo, Almasdi Syahza, Sri Wulandari, and Darmadi. 2021. “Palm-Based Agroforestry As An Alternative to Critical Land Improvement in Koto Panjang Hydro-Electrical Power Plant Catchment Area ”. GIS Business 16 (1), 51-59. https://www.gisbusiness.org/index.php/gis/article/view/20321.