Chakrit Sirisinha. (1993) A study to develop plastic magnets based on poly (vinyl chloride) and barium ferrite composites. Mahidol University,:ม.ป.ท.Chakrit Sirisinha. 1993. A study to develop plastic magnets based on poly (vinyl chloride) and barium ferrite composites. ม.ป.ท.:Mahidol University,;Chakrit Sirisinha. A study to develop plastic magnets based on poly (vinyl chloride) and barium ferrite composites. ม.ป.ท.:Mahidol University, 1993. Print.