Umaña-Villalobos, Gerardo. “Phytoplankton Variability in Lake Fraijanes, Costa Rica, in Response to Local Weather Variation”. Revista de Biología Tropical 62, no. 2 (June 1, 2014): 483–494. Accessed August 16, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/11689.