Phutthisun Kruekum; Panitpim Sittsak. (2017) An Analysis of Marketing System and Marketing Margins of Smallholder Rubber Farms in Chiang Rai and Phayao Provinces. <i>Journal of Community Development and Life Quality</i>, <i>5</i>(2), 330-352.Phutthisun Kruekum; Panitpim Sittsak. "An Analysis of Marketing System and Marketing Margins of Smallholder Rubber Farms in Chiang Rai and Phayao Provinces". Journal of Community Development and Life Quality 5 (2017):330-352.Phutthisun Kruekum; Panitpim Sittsak. An Analysis of Marketing System and Marketing Margins of Smallholder Rubber Farms in Chiang Rai and Phayao Provinces. Somsak Publisher:ม.ป.ท. 2017.