Sunthararat Saktong. (2008) Distribution of manganese and copper in GAPs vineyard and its potential environmental risk : a case study at vineyard in Pak Chong district, Nakhon Ratchasima province /. Mahidol University,:ม.ป.ท.Sunthararat Saktong. 2008. Distribution of manganese and copper in GAPs vineyard and its potential environmental risk : a case study at vineyard in Pak Chong district, Nakhon Ratchasima province /. ม.ป.ท.:Mahidol University,;Sunthararat Saktong. Distribution of manganese and copper in GAPs vineyard and its potential environmental risk : a case study at vineyard in Pak Chong district, Nakhon Ratchasima province /. ม.ป.ท.:Mahidol University, 2008. Print.