van Gessellen, A., and R. Pieters. “The Use of a Tissue Culture Line to Determine the Estrogen-Active Substances in Municipal Water of Potchefstroom in the North West Province”. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt; 32, no. 1 (December 19, 2013): 1 page. Accessed April 27, 2024. http://satnt.co.za/index.php/satnt/article/view/426.