Sadiq , A.Y., Oluwasanya , G.O., Eruola , O.A., Ojekunle , O.Z., Odjegba, E.E. and Ahmad , S. M. 2022. Assessment and mapping of the spatial trend in groundwater quality in Abeokuta, Nigeria. NIGERIAN JOURNAL OF SCIENCE AND ENVIRONMENT. 18, 2 (Jun. 2022).