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平台:
EBSCOhost Business Source Complete
(Available from 1995/04/01. Most recent 1 year(s) not available.)
EBSCOhost Environment Complete
(Available from 1995/04/01. Most recent 1 year(s) not available.)
ProQuest Agricultural & Environmental Science Database
(Available from 1999/02/01 volume: 7 issue: 1 until 2005/07/31 volume: 13 issue: 3.)
ProQuest Political Science Database
(Available from 1999/02/01 volume: 7 issue: 1 until 2005/07/31 volume: 13 issue: 3.)
ProQuest SciTech Premium Collection
(Available from 1999/02/01 volume: 7 issue: 1 until 2005/07/31 volume: 13 issue: 3.)
Wiley Online Library
(Available from 1996.)