平台:
EBSCOhost Academic Search Complete
(Available from 1994/01/01 until 1996/05/31.)
ProQuest SciTech Premium Collection
(Available from 1996/01/01 until 1997/01/31.)
EBSCOhost Academic Search Complete
(Available from 1994/01/01 until 1996/05/31.)
ProQuest SciTech Premium Collection
(Available from 1996/01/01 until 1997/01/31.)