Sumitra Phanijkul. (1999) Correlative study of teak ping width and climatological data from Srisatchanalai area, northern Thailand. Mahidol University,:ม.ป.ท.Sumitra Phanijkul. 1999. Correlative study of teak ping width and climatological data from Srisatchanalai area, northern Thailand. ม.ป.ท.:Mahidol University,;Sumitra Phanijkul. Correlative study of teak ping width and climatological data from Srisatchanalai area, northern Thailand. ม.ป.ท.:Mahidol University, 1999. Print.