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平台:
DOAJ Directory of Open Access Journals
(Available from 2001.)
EBSCOhost Environment Complete
(Available from 2005/01/01.)
ProQuest Agricultural & Environmental Science Database
(Available from 2010/04/15.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 2010/04/15.)
ProQuest SciTech Premium Collection
(Available from 2010/04/15.)