SPONGBERG, A. L. PCB concentrations in sediments from the Gulf of Nicoya estuary, Pacific coast of Costa Rica. Revista de Biología Tropical, [S. l.], v. 52, n. S2, p. 11–22, 2004. Disponível em: https://www.revistas.ucr.ac.cr/index.php/rbt/article/view/26572. Acesso em: 18 may. 2024.