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平台:
EBSCOhost Academic Search Complete
(Available from 1994/03/01 until 1996/04/30.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 1997/10/01 until 1998/10/31.)
ProQuest SciTech Premium Collection
(Available from 1997/10/01 until 1998/10/31.)