Kabigumila, Jonathan D.2016-06-132016-06-131993Kabigumila, J., 1993. Diurnal activity of elephants in Ngorongoro Crater, Tanzania. African Journal of Ecology, 31(1), pp.75-80.http://hdl.handle.net/20.500.11810/2417enJournal Article10.1111/j.1365-2028.1993.tb00520.x