Prawit Raya. (2008) The development of tree height measurement tool for forest resource inventory. Mahidol University,:ม.ป.ท.Prawit Raya. 2008. The development of tree height measurement tool for forest resource inventory. ม.ป.ท.:Mahidol University,;Prawit Raya. The development of tree height measurement tool for forest resource inventory. ม.ป.ท.:Mahidol University, 2008. Print.