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平台:
EBSCOhost Academic Search Complete
(Available from 2001/12/01 until 2008/02/29.)
EBSCOhost OmniFile Full Text Select
(Available from 2005/12/01 until 2007/12/31.)
EBSCOhost Professional Development Collection
(Available from 2001/12/01 until 2008/02/29.)
ProQuest Political Science Database
(Available from 2001/07/01 until 2010/03/31.)