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平台:
ProQuest Agricultural & Environmental Science Database
(Available from 2003/01/01 volume: 15 issue: 1 until 2007/10/31 volume: 19 issue: 4.)
ProQuest Political Science Database
(Available from 2003/01/01 volume: 15 issue: 1 until 2007/10/31 volume: 19 issue: 4.)
ProQuest SciTech Premium Collection
(Available from 2003/01/01 volume: 15 issue: 1 until 2007/10/31 volume: 19 issue: 4.)
Taylor & Francis Online Journals
(Available from 2006 until 2019.)