平台:
EBSCOhost Academic Search Complete
(Available from 2001/02/01 until 2005/10/31.)
EBSCOhost STM Source
(Available from 2001/02/01 until 2005/10/31.)
平台:
EBSCOhost Academic Search Complete
(Available from 1995/01/01 until 2000/10/31.)
EBSCOhost Environment Complete
(Available from 1995/01/01 until 2000/10/31.)
EBSCOhost Academic Search Complete
(Available from 1995/01/01 until 2000/10/31.)
EBSCOhost Environment Complete
(Available from 1995/01/01 until 2000/10/31.)