BAMIRO, F.O., K.O. ESUOSO, and O.A. TAIRU. 1995. “?COMPARATIVE ELEMENTAL CONTENTS (Cu, Ca, Zn, K, Mg, Ni, Fe AND Cd) OF SEVEN VARIOUS EDIBLE TUBERS IN NIGERIA”. Biological Sciences - PJSIR 38 (8):316-18. https://v2.pjsir.org/index.php/biological-sciences/article/view/2509.