Sutthathorn Suwannaratana. 1994. The effects of irrigation on the ground flora of a deciduous dipterocarp forest at Huai Hong Khrai. Graduate School, Chiang Mai University;
Sutthathorn Suwannaratana. (1994) The effects of irrigation on the ground flora of a deciduous dipterocarp forest at Huai Hong Khrai . Chiang Mai University/Chiang Mai.
Sutthathorn Suwannaratana. The effects of irrigation on the ground flora of a deciduous dipterocarp forest at Huai Hong Khrai. . Chiang Mai:Chiang Mai University, 1994.
Sutthathorn Suwannaratana. (1994) The effects of irrigation on the ground flora of a deciduous dipterocarp forest at Huai Hong Khrai . Chiang Mai University/Chiang Mai.