School or University
Date of Birth
June 20, 2012
Excuse me where is master Calculus days 3-6?
May 01, 2012
hi sir, your video really helped me. Thanks a lot :) and by the way, where's day 3-6?
I would be really grateful if you'd post more vids
December 14, 2011
September 29, 2011
Dude are you for real?
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