Mukandala, Rwekaza S.; Mushi, Samuel S.; Baregu, Mwesiga(Dar es Salaam : Department of Political Science and Public Administration, University of Dar es Salaam, )
Ikingura, J. R.; Mutakyahwa, M. K. D.; Marobhe, I. M.; Manya, Shukrani; Kazimoto, E.; Kasanzu, C.; Mshiu, Elisante Elisaimon(University of Dar Es Salaam, )
Leger, C.; Barth, A.; Falk, D.; Mruma, A. H.; Magigita, M.; Boniface, N.; Manya, Shukrani; Kagya, M.; Stanek, K. P.(Geological Survey of Tanzania (GST), )