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平台:
DOAJ Directory of Open Access Journals
(Available from 1955.)
EBSCOhost Academic Search Complete
(Available from 2012/03/01.)
ProQuest Agricultural & Environmental Science Database
(Available from 2000/07/01.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 2000/07/01.)
ProQuest SciTech Premium Collection
(Available from 2000/07/01.)