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平台:
DOAJ Directory of Open Access Journals
(Available from 2009.)
EBSCOhost Academic Search Complete
(Available from 2009/06/01.)
EBSCOhost STM Source
(Available from 2009/06/01.)
Taylor & Francis Open Access
(Available from 2009/01/01 volume: 1 issue: 1 until 2021/12/31 volume: 13 issue: 1.)