Nang Kham Nyo Oo. (2011) The shift of factors use from cheroot production to poppy production in special region six, Shan state, Myanmar /. Chiang Mai University,:ม.ป.ท.Nang Kham Nyo Oo. 2011. The shift of factors use from cheroot production to poppy production in special region six, Shan state, Myanmar /. ม.ป.ท.:Chiang Mai University,;Nang Kham Nyo Oo. The shift of factors use from cheroot production to poppy production in special region six, Shan state, Myanmar /. ม.ป.ท.:Chiang Mai University, 2011. Print.