Speciation of Some Heavy Metals as Influenced by Poultry Manure Application in Dumpsite Soils Azeez, Jamiu Oladipupo ; Olowoboko, Toyin Blessing ; Ajenifuja, Mumin Debo ; Ilebor, Nonso ; Adekoya, Elizabeth Abstract Publication: Journal of Applied Sciences Pub Date: May 2019 DOI: 10.3923/jas.2019.487.494 Bibcode: 2019JApSc..19..487A