punnee hamcumpai และ Paiboon Daosodsai. (2017) Knowledge and Behavior of Food Seller for Selection of Plastic Bags to Fill Hot Food with the Problem of Contamination of Heavy Metals from Plastic Bags: A Case Study in the Market of Khon Kaen University. <i>Isan Journal of Pharmaceutical Sciences</i>, <i>13</i>(2), 16-24.punnee hamcumpai และ Paiboon Daosodsai. "Knowledge and Behavior of Food Seller for Selection of Plastic Bags to Fill Hot Food with the Problem of Contamination of Heavy Metals from Plastic Bags: A Case Study in the Market of Khon Kaen University". Isan Journal of Pharmaceutical Sciences 13 (2017):16-24.punnee hamcumpai และ Paiboon Daosodsai. Knowledge and Behavior of Food Seller for Selection of Plastic Bags to Fill Hot Food with the Problem of Contamination of Heavy Metals from Plastic Bags: A Case Study in the Market of Khon Kaen University. Faculty of Pharmaceutical Sciences KKU MSU UBU:ม.ป.ท. 2017.