Israporn Unsanan และ Khon Kaen University. (2016) Effect of Putrescine and Sucrose on Vase Life of Dendrobium cv. 5N. Mahasarakham University:ม.ป.ท.Israporn Unsanan และ Khon Kaen University. 2016. Effect of Putrescine and Sucrose on Vase Life of Dendrobium cv. 5N. ม.ป.ท.:Mahasarakham University;Israporn Unsanan และ Khon Kaen University. Effect of Putrescine and Sucrose on Vase Life of Dendrobium cv. 5N. ม.ป.ท.:Mahasarakham University, 2016. Print.