Mero Valarezo, Mariuxi. “The Determination of Heavy Metals (Cd and Pb) in Bivalve Molluscs Commercial Interest Four Estuaries of the Gulf of Guayaquil”. Revista Científica Ciencias Naturales y Ambientales 4, no. 1 (December 5, 2010): 14. Accessed October 28, 2024. https://revistas.ug.edu.ec/index.php/cna/article/view/1779.