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平台:
ProQuest Agricultural & Environmental Science Database
(Available from 2005/01/01 volume: 13 issue: 1 until 2008/11/30 volume: 16 issue: 6.)
ProQuest SciTech Premium Collection
(Available from 2005/01/01 volume: 13 issue: 1 until 2008/11/30 volume: 16 issue: 6.)