B.U., Nwaka (2018) “Activity Concentrations and Gamma Dose rate Levels in Poultry Feeds and Manure used in Ibadan, Nigeria”, Global Journal of Science Frontier Research, 18(A4), pp. 53–66. Available at: https://journalofscience.org/index.php/GJSFR/article/view/2261 (Accessed: 7 May 2024).