Piyawat Katewongsa และ Yothin Sawangdee. (2011) Population dynamics and agrarian land use strategies: the case study of nang rong, thailand. Mahidol University:ม.ป.ท.Piyawat Katewongsa และ Yothin Sawangdee. 2011. Population dynamics and agrarian land use strategies: the case study of nang rong, thailand. ม.ป.ท.:Mahidol University;Piyawat Katewongsa และ Yothin Sawangdee. Population dynamics and agrarian land use strategies: the case study of nang rong, thailand. ม.ป.ท.:Mahidol University, 2011. Print.