Since 10-30-03

Folder kienthuc for students is loading .... . . .

There are two types of passwords: one for the web and one for the acrobat pdf books 

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To enter the web: 

username: vietnam
password: vietnam 

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After entering the web, you can download acrobat pdf books..

to open acrobat books use password:   tmp

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 you cannot change the contents... because of the copyright.

some pdf books cannot be printed out ...

So you should check the document security of the acrobat books..

if you want to print ... go to

http://www.lich-mc.com/fdback.htm 

and post your request with your email address