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THANK YOU TO OUR PARTNERS! www.earthviewenvironmental.com
www.veenstrakimm.com
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HUMAN AND NATURAL
HISTORY PARTNERS
ia.water.usgs.gov www.igsb.uiowa.edu www.uiowa.edu/~osa
Booklet designed and edited by Angela R. Collins and Lynn M. Alex of the OSA. Additional
booklet contributions from Cynthia Peterson, David Benn, Leah Rogers, and John Doershuk.
