URL：https://www.researchgate.net/profile/Ayele-Fenta-2/publication/343361287/figure/fig1/AS:919578012053504@1596255891089/Map-of-the-study-area-showing-sub-Saharan-Africa-subdivided-into-four-sub-regions_Q640.jpg
掲載元：https://www.researchgate.net/figure/Map-of-the-study-area-showing-sub-Saharan-Africa-subdivided-into-four-sub-regions_fig1_343361287
