Wiriya Limchalerm. (1991) Preparation and evaluation of free-oxygen absorber. Mahidol University,:ม.ป.ท.Wiriya Limchalerm. 1991. Preparation and evaluation of free-oxygen absorber. ม.ป.ท.:Mahidol University,;Wiriya Limchalerm. Preparation and evaluation of free-oxygen absorber. ม.ป.ท.:Mahidol University, 1991. Print.