Mohammed Yusuf Ahmed Musa และ Sothitorn Mallikamas. (2012) Mohammed Yusuf Ahmed Musa TitleThe prices, availability and affordability of essential medicines in Sudan. Chulalongkorn University:ม.ป.ท.Mohammed Yusuf Ahmed Musa และ Sothitorn Mallikamas. 2012. Mohammed Yusuf Ahmed Musa TitleThe prices, availability and affordability of essential medicines in Sudan. ม.ป.ท.:Chulalongkorn University;Mohammed Yusuf Ahmed Musa และ Sothitorn Mallikamas. Mohammed Yusuf Ahmed Musa TitleThe prices, availability and affordability of essential medicines in Sudan. ม.ป.ท.:Chulalongkorn University, 2012. Print.