Million-year-old groundwater in Maryland water supply Date: June 18, 2012 Source: United States Geological Survey http://www.sciencedaily.com/re...

Published on September 14, 2014 06:03 by Prof. Dr. Hilmi S. Salem, Professor, Executive Director, Consultant

Million-year-old groundwater in Maryland water supply Date: June 18, 2012 Source: United States Geological Survey http://www.sciencedaily.com/releases/2012/06/120618133145.htm