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<xml><bibliography><APA>Awiruth Thongdonjui และผู้แต่งคนอื่นๆ. (2008) Supported ziegler-natta catalyst prepared from magnesium ethyl carbonate for ethylene polymerization. Chulalongkorn University:ม.ป.ท.</APA><Chicago>Awiruth Thongdonjui และผู้แต่งคนอื่นๆ. 2008. Supported ziegler-natta catalyst prepared from magnesium ethyl carbonate for ethylene polymerization. ม.ป.ท.:Chulalongkorn University;</Chicago><MLA>Awiruth Thongdonjui และผู้แต่งคนอื่นๆ.  Supported ziegler-natta catalyst prepared from magnesium ethyl carbonate for ethylene polymerization.  ม.ป.ท.:Chulalongkorn University, 2008. Print.</MLA></bibliography></xml>
