https://www.myjoyonline.com/tag/life-cycle-cost-approach-for-water-and-sanitation-services-a-peek-into-strides-of-prof-kwabena-biritwum-nyarko/-------https://www.myjoyonline.com/tag/life-cycle-cost-approach-for-water-and-sanitation-services-a-peek-into-strides-of-prof-kwabena-biritwum-nyarko/