Amente, G., Assen, M., Brhane, H., Tamiru, E. and Nigussie, B. (2016) “Radiation Levels in Buildings on the Main Campus of Haramaya University and at the Towns of Harar and Dire Dawa, Eastern Ethiopia”, East African Journal of Sciences, 10(2), pp. 133–144. doi: 10.20372/eajs.v10i2.368.