DVH DVH
@dvh312
Viet Nam, DN
Joined Oct 2011
World Rank: #19477 (1.6 points)
Institution: The village school
Activity over the last year
Effectiveness
- Problems solved
- 4
- Solutions submitted
- 22
Viet Nam, DN
Joined Oct 2011
World Rank: #19477 (1.6 points)
Institution: The village school