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平台:
EBSCOhost Academic Search Complete
(Available from 1990/07/01 until 2002/01/31.)
EBSCOhost Environment Complete
(Available from 1990/07/01 until 2002/01/31.)
EBSCOhost OmniFile Full Text Select
(Available from 1994/01/01 until 2001/03/31.)
EBSCOhost Science Reference Center
(Available from 1990/07/01 until 2002/01/31.)
ProQuest Agricultural & Environmental Science Database
(Available from 1998/09/01 until 2002/01/31.)
ProQuest Biological Science Database
(Available from 1998/09/01 until 2002/01/31.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 1998/09/01 until 2002/01/31.)
ProQuest SciTech Premium Collection
(Available from 1998/09/01 until 2002/01/31.)