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平台:
EBSCOhost Academic Search Complete
(Available from 1990/03/01 until 2010/09/30.)
EBSCOhost OmniFile Full Text Select
(Available from 1994/01/01 until 2010/09/30.)
EBSCOhost Professional Development Collection
(Available from 1990/03/01 until 2010/09/30.)