Evaluating the Learning Setting and Identifying the Study Needs for Students With Visual Impairment at the University of Khartoum in Sudan 論文 Hisham Elser Bilal Salih・Toshibumi Kakizawa ·2016 ·『Journal of Special Education Research』 4(2) pp. 29-37 doi:10.6033/specialeducation.4.29