GEOCHEMICAL APPRAISAL OF OBUDU RANCH SPRING SOUTH -EASTERN NIGERIA. FJST [انترنت]. 31 مارس، 2021 [وثق 17 مايو، 2026];7(1):5-12. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/151