le quang tung
@iphone4
Viet Nam, dong nai
Joined Jun 2012
World Rank: #5536 (6.4 points)
Institution: nhà thiếu nhi
Activity over the last year
Effectiveness
- Problems solved
- 21
- Solutions submitted
- 101
Viet Nam, dong nai
Joined Jun 2012
World Rank: #5536 (6.4 points)
Institution: nhà thiếu nhi
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