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平台:
ProQuest Agricultural & Environmental Science Database
(Available from 2001/07/01 volume: 66 issue: 7 until 2008/10/31 volume: 73 issue: 10.)
ProQuest SciTech Premium Collection
(Available from 2001/07/01 volume: 66 issue: 7 until 2008/10/31 volume: 73 issue: 10.)