Essien , B.C. and Ige , O.E. 2020. Recent pollen rain analysis in Akoko environment as indicator of the vegetation of Ondo State, Nigeria. GSC Biological and Pharmaceutical Sciences. 12, 1 (Jul. 2020), 116–137. DOI:https://doi.org/10.30574/gscbps.2020.12.1.0149.