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平台:
EBSCOhost OmniFile Full Text Select
(Available from 1992/01/01 until 2001/11/30.)
EBSCOhost Science Reference Center
(Available from 1992/07/01 until 2001/11/30.)
ProQuest Agricultural & Environmental Science Database
(Available from 1995/11/01 until 2010/11/30.)
ProQuest SciTech Premium Collection
(Available from 1995/11/01 until 2010/11/30.)