Njoku-Obi Treasure. “Comparative Study on the Microbiological and Physico-Chemical Properties of Spring Water and Tap Water”. IOASD Journal of Medical and Pharmaceutical Sciences, vol. 1, no. 1, Oct. 2024, pp. 10-17, https://doi.org/10.67224/ioasdjmps.2024.v01i01.002.