ESEKA, K.; MOKOBIA, C.; MOLUA, C.; UKPENE , A. O. CHARACTERIZATION OF RADIOACTIVITY FROM PRIMORDIAL RADIONUCLIDES IN THE SOIL OF IKA SOUTH LOCAL GOVERNMENT AREA OF DELTA STATE. FUDMA JOURNAL OF SCIENCES, v. 6, n. 2, p. 180 - 184, 18 May 2022.