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平台:
DOAJ Directory of Open Access Journals
(Available from 2021.)
Elsevier SD Journals - AutoHoldings
(Available from 1994/03/01 volume: 1 issue: 1.)
Elsevier SDOL (ScienceDirect Online)
(Available from 1995.)
Elsevier SDOL Backfile Complete
(Available from 1994/03/01 volume: 1 issue: 1 until 1994 volume: 1 issue: 2.)