Maintenance Information

Period: 2012/1/30 19:30 -- 22:30 (Asia Time/GMT +9)

This site cannot be accessed for the above period.

We apologizes for any inconvenience this may cause, but this action is necessary to ensure a more reliable service.

Thank you for your kind attention and cooperation.

In order to access the PERC Corpus, you need to obtain a User ID and a password.
For more details please visit the PERC Corpus website at

http://scn.jkn21.com/~percinfo/