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平台:
EBSCOhost Academic Search Complete
(Available from 2002/01/01 until 2013/11/30.)
EBSCOhost Business Source Complete
(Available from 2002/01/01 until 2013/11/30.)
EBSCOhost STM Source
(Available from 2002/01/01 until 2013/11/30.)
ProQuest SciTech Premium Collection
(Available from 2002/02/01 until 2006/07/31. Available from 2014/07/01 until 2018/07/20.)