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平台:
DOAJ Directory of Open Access Journals
(Available from 2018.)
Emerald Open Access
(Available from 2009 volume: 1 issue: 1.)
ProQuest Agricultural & Environmental Science Database
(Available from 2010. Most recent 1 year(s) not available.)
ProQuest Earth, Atmospheric & Aquatic Science Database
(Available from 2010. Most recent 1 year(s) not available.)
ProQuest SciTech Premium Collection
(Available from 2010. Most recent 1 year(s) not available.)