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平台:
EBSCOhost Academic Search Complete
(Available from 2002/08/01.)
EBSCOhost STM Source
(Available from 2007/08/01.)
JSTOR Sustainability
ProQuest Agricultural & Environmental Science Database
(Available from 1999/06/01 volume: 8 issue: 1. Most recent 1 year(s) not available.)
ProQuest Political Science Database
(Available from 1999/06/01 volume: 8 issue: 1. Most recent 1 year(s) not available.)
ProQuest SciTech Premium Collection
(Available from 1999/06/01 volume: 8 issue: 1. Most recent 1 year(s) not available.)