“Validation of the Total Coliform and E. Coli Counting Technique by the Membrane Filtration Method in the Quality Control Laboratory of Aguas De Cartagena SA ESP”. Ciencia y Salud Virtual 2, no. 1 (December 30, 2010): 21–30. Accessed April 25, 2026. https://revistas.uninunez.edu.co/index.php/cienciaysalud/article/view/61.