Grisana Linwattana และ Boonrat Jungdee; Grienggrai Puntuwan; Kingkaw Kunket; Walaiporn Sasiprapa; Nopparat Muangprasert. (2005) Characterization and Delineation of Types of Drought in the Northeast of Thailand for Rice Production through Water Balance Modeling-GIS Integration. <i>Thai Agricultural Research Journal</i>, <i>23</i>(1), 77-89.Grisana Linwattana และ Boonrat Jungdee; Grienggrai Puntuwan; Kingkaw Kunket; Walaiporn Sasiprapa; Nopparat Muangprasert. "Characterization and Delineation of Types of Drought in the Northeast of Thailand for Rice Production through Water Balance Modeling-GIS Integration". Thai Agricultural Research Journal 23 (2005):77-89.Grisana Linwattana และ Boonrat Jungdee; Grienggrai Puntuwan; Kingkaw Kunket; Walaiporn Sasiprapa; Nopparat Muangprasert. Characterization and Delineation of Types of Drought in the Northeast of Thailand for Rice Production through Water Balance Modeling-GIS Integration. Department of Agriculture:ม.ป.ท. 2005.