Kolo Yaro Yakubu และ Nopphol Witvorapong. (2013) EFFECTS OF FREE INTERVENTIONS ON THE UTILIZATION OF ANTI-MALARIA SERVICES IN NIGER STATE, NIGERIA. 2010-2013. Chulalongkorn University:ม.ป.ท.Kolo Yaro Yakubu และ Nopphol Witvorapong. 2013. EFFECTS OF FREE INTERVENTIONS ON THE UTILIZATION OF ANTI-MALARIA SERVICES IN NIGER STATE, NIGERIA. 2010-2013. ม.ป.ท.:Chulalongkorn University;Kolo Yaro Yakubu และ Nopphol Witvorapong. EFFECTS OF FREE INTERVENTIONS ON THE UTILIZATION OF ANTI-MALARIA SERVICES IN NIGER STATE, NIGERIA. 2010-2013. ม.ป.ท.:Chulalongkorn University, 2013. Print.