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平台:
DOAJ Directory of Open Access Journals
(Available from 2003 until 2018.)
EBSCOhost Health Policy Reference Center
(Available from 2012/12/01.)
ProQuest Agricultural & Environmental Science Database
(Available from 2010/09/01 until 2018/05/31.)
ProQuest SciTech Premium Collection
(Available from 2010/09/01 until 2018/05/31.)