Evaluation of Heavy Metals Ions in Calopogonium mucunoides, Manihot esculenta, Psidium guajava and Mangifera indica  Plant Species Within Quarry Site, Akamkpa, Nigeria and Phyto-remediation Potential. (2025). Communication In Physical Sciences, 12(4), 1410-1419. https://journalcps.com/index.php/volumes/article/view/562