Resumen de Potty to potability.
R. W. Lowrie, Greg Arzoomanian
Several letters to the editor are presented in response to the article “Bottoms Up” by Olive Heffernan, which includes a reply by Heffernan, in the July 2014 issue.
R. W. Lowrie, Greg Arzoomanian
Several letters to the editor are presented in response to the article “Bottoms Up” by Olive Heffernan, which includes a reply by Heffernan, in the July 2014 issue.
