Yongyuth Ruanta. (1999) Law enforcement for health consumer protection : a study in food and drug product. Mahidol University,:ม.ป.ท.Yongyuth Ruanta. 1999. Law enforcement for health consumer protection : a study in food and drug product. ม.ป.ท.:Mahidol University,;Yongyuth Ruanta. Law enforcement for health consumer protection : a study in food and drug product. ม.ป.ท.:Mahidol University, 1999. Print.