%0 Journal Article %T Manuscript Information Bioaccumulation of Heavy Metals in Fish (Tilapia zilli) and Bullfrog (Pyxicephalus edulis) from River Challawa Kano State Nigeria Authors Abstract Keywords Reference %A Adejube A. A. H. %A Akyengo O. %A Putshaka J. D. %A Yakubu A. %J - %D 2015 %U http://www.aascit.org/journal/archive2?journalId=904&paperId=2547