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1. Earth Sciences Board: group...

2. Gary Griggs, professor of earth...

3. Gary Griggs, professor of earth...

4. Gary Griggs, professor of earth...

5. Gary Griggs, professor of earth...

6. Gary Griggs, professor of earth...

7. Gary Griggs, professor of earth...

8. Gary Griggs, professor of earth...

9. Gary Griggs, professor of earth...