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平台:
EBSCOhost Academic Search Complete
(Available from 1990/01/01 until 2001/11/30.)
EBSCOhost Health Policy Reference Center
(Available from 1990/01/01 until 2001/11/30.)
EBSCOhost STM Source
(Available from 1990/01/01 until 2001/11/30.)
JSTOR Arts and Sciences I
(Available from 1969/04/01 volume: 1 issue: 1 until 2001/11/30 volume: 33 issue: 6.)