回帖：Old material isn't it ?Which year ? ? It looks like something long time ago.

Sorry, just want to be sure it is not from "very very old material" !

Can you give exact date and year ?

Pay attention:

This article said Dr. Yan made a report personally there.....

How can he do it ?

He is not in China ?????

?????

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[此贴子已经被作者于2002-10-20 13:52:37编辑过]