Somrutai Chaichanrom และ Bunlur Emaruchi. (2010) A selection of suitable cash crops for dry season planting : a case study in Tung Kula Rong Hai, Thailand. Mahidol University:ม.ป.ท.Somrutai Chaichanrom และ Bunlur Emaruchi. 2010. A selection of suitable cash crops for dry season planting : a case study in Tung Kula Rong Hai, Thailand. ม.ป.ท.:Mahidol University;Somrutai Chaichanrom และ Bunlur Emaruchi. A selection of suitable cash crops for dry season planting : a case study in Tung Kula Rong Hai, Thailand. ม.ป.ท.:Mahidol University, 2010. Print.