Hope Anita, S., Anita Franklin, A., O.E Omamoke, E. and Godwin Kparobo, A. 2026. NATURAL RADIOACTIVITY AND CANCER RISK ASSESSMENT OF BUILDING MATERIALS IN NORTHERN DELTA STATE, NIGERIA. GPH-International Journal of Applied Science. 9, 7 (Sep. 2026), 39-49. DOI:https://doi.org/10.5281/zenodo.22506751.