Atribución-NoComercial 4.0 InternacionalOkunlola, OIdowu, O2019-07-032019-07-032012https://repositorio.unal.edu.co/handle/unal/72215application/pdfspaDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/The geochemistry of claystone-shale deposits from the maastritchian patti formation, southern bida basin, nigeriaArtÃculo de revistahttp://bdigital.unal.edu.co/36688/http://bdigital.unal.edu.co/36688/2/info:eu-repo/semantics/openAccess