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http://mathforum.org/kb/thread.jspa?messageID=7860475&tstart=0#7860475
I'm not sure that this information will be helpful to you, but here goes anyway.

At the AP Annual Conference in]]>Aug 9, 2012 7:55:53 PMAug 9, 2012 7:55:53 PMfoerster@idworld.net0[ap-calculus] I have an exchange student from China. How can I help him?
http://mathforum.org/kb/thread.jspa?messageID=7860479&tstart=0#7860479
]]>Aug 9, 2012 7:55:52 PMAug 9, 2012 7:55:52 PM1