Viboon Thepent. (2015) AGRICLUTURAL MECHANIZATION IN THAILAND. Thai Society of Agricultural Engineering:ม.ป.ท.Viboon Thepent. 2015. AGRICLUTURAL MECHANIZATION IN THAILAND. ม.ป.ท.:Thai Society of Agricultural Engineering;Viboon Thepent. AGRICLUTURAL MECHANIZATION IN THAILAND. ม.ป.ท.:Thai Society of Agricultural Engineering, 2015. Print.