S. Arasaretnam, H.R.P. Prasadini, K. Venujah. Assessment of Open well Water Quality around Puttalam District, Sri Lanka. IJASRE [Internet]. 2018 Dec. 5 [cited 2024 Nov. 24];4(12):225-32. Available from: https://ijasre.net/index.php/ijasre/article/view/824