Happy New Year!
In the New Year what do you have planned?
January 1, 2011
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0 voted
November 30, 2010
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Posted
who can recommend me some good songs?
November 8, 2010
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In what ways should the college education be improved?
November 3, 2010
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Answered
It's my graduation thesis of bachelor degree .Some views is from previous scholars.You can load it from the http://extras.springer.com.I'm only a student and understand the little about earthquakes.