Marín Leal, Julio Cesar, María Elena Romero González, Marinela Colina de Vargas, and Hilda Ledo de Medina. “Pigments Detennination in Sediments from a Tropical Water Body”. Rev. Téc. Fac. Ing. Univ. Zulia 20, no. 2 (1). Accessed December 18, 2025. https://produccioncientificaluz.org/index.php/tecnica/article/view/5529.