Paaby, Pía, and Charles R Goldman. “Chlorophyll, Primary Productivity, and Respiration in a Lowland Costa Rican Stream”. Revista de Biología Tropical 40, no. 2 (August 1, 1992): 185–198. Accessed November 27, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/24526.