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Richard Walker (4/7/2015) duration 22 minutes 14 seconds Richard Walker (4/7/2015) Richard Walker (4/7/2015)	Richard Walker (4/7/2015) Coping with Water Scarcity: Social Science southwestern united states +22 More From ATS Video 0 likes 30 plays 0

duration 22 minutes 14 seconds

Richard Walker (4/7/2015)

Coping with Water Scarcity: Social Science

+22 More

From ATS Video 0 likes 30 plays 0