Henry, Hubert, Richard Thorn, and Eugene Brady. “An Assessment of the Suitability of a Range of Chemical and Biological Tracers to Monitor the Movement of Septic Tank Effluents to Groundwater”. Irish Geography 24, no. 2 (August 1, 2016): 91–105. Accessed May 1, 2024. https://irishgeography.ie/index.php/irishgeography/article/view/580.