Virak Prum. (2000) The effects of socioeconomic development on in-migration rate at district level : an analysis of district level in Combodia. Mahidol University,:ม.ป.ท.Virak Prum. 2000. The effects of socioeconomic development on in-migration rate at district level : an analysis of district level in Combodia. ม.ป.ท.:Mahidol University,;Virak Prum. The effects of socioeconomic development on in-migration rate at district level : an analysis of district level in Combodia. ม.ป.ท.:Mahidol University, 2000. Print.