SAND MINING FACTS
The Ojos Negros Research Group
1.
IMPACTS OF SAND MINING
2.
MANAGEMENT
3.
REGULATION OF SAND MINING IN THE U.S.
4.
STRATEGIES FOR THE OJOS NEGROS VALLEY
5.
SUMMARY
PORTAL
http://ponce.sdsu.edu/three_issues_sandminingfacts.html
200908
