Somboun Vang และ Pipat Laowattanabandit. (2015) Slope stability assessment and its effect on pit design at Kaolin mine, Ranong province, Thailand. Chulalongkorn University:ม.ป.ท.Somboun Vang และ Pipat Laowattanabandit. 2015. Slope stability assessment and its effect on pit design at Kaolin mine, Ranong province, Thailand. ม.ป.ท.:Chulalongkorn University;Somboun Vang และ Pipat Laowattanabandit. Slope stability assessment and its effect on pit design at Kaolin mine, Ranong province, Thailand. ม.ป.ท.:Chulalongkorn University, 2015. Print.