Buddhiporn Singkasaylit. (1991) Preliminary investigation on peat gasification. Mahidol University,:ม.ป.ท.Buddhiporn Singkasaylit. 1991. Preliminary investigation on peat gasification. ม.ป.ท.:Mahidol University,;Buddhiporn Singkasaylit. Preliminary investigation on peat gasification. ม.ป.ท.:Mahidol University, 1991. Print.