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平台:
JSTOR Arts and Sciences XV
(Available from 1990/01/01 volume: 1 issue: 1 until 2018/01/31 volume: 27 issue: 2.)
ProQuest Agricultural & Environmental Science Database
(Available from 2006/01/01 volume: 15 issue: 1 until 2022/01/31 volume: 31 issue: 1.)
ProQuest Political Science Database
(Available from 2006/01/01 volume: 15 issue: 1 until 2022/01/31 volume: 31 issue: 1.)
ProQuest SciTech Premium Collection
(Available from 2006/01/01 volume: 15 issue: 1 until 2022/01/31 volume: 31 issue: 1.)