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平台:
DOAJ Directory of Open Access Journals
(Available from 2005.)
EBSCOhost Academic Search Complete
(Available from 2008/10/01.)
EBSCOhost STM Source
(Available from 2008/10/01.)
ProQuest Agricultural & Environmental Science Database
(Available from 2009/01/01 volume: 35 issue: 1.)
ProQuest Biological Science Database
(Available from 2009/01/01 volume: 35 issue: 1.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 2009/01/01 volume: 35 issue: 1.)
ProQuest SciTech Premium Collection
(Available from 2009/01/01 volume: 35 issue: 1.)