Tyopine, A., Obalum, S., Igwe, C. and Okoye, C. (2022) “Spatial distribution and relative enrichment of some upper-group trace elements in rhizosphere of highly anthropized and rapidly developing tropical environment”, EQA - International Journal of Environmental Quality, 49(1), pp. 19–33. doi: 10.6092/issn.2281-4485/14554.