Luke, O. (2007). Estimation of Groundwater Recharge i n Oil Producing Areas of the N iger Delta Basin of Nigeria: Usi ng Soil Moi sture Deficit Techniq ue. Biological Sciences - PJSIR, 50(4), 240–246. Retrieved from http://v2.pjsir.org/index.php/biological-sciences/article/view/972