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History of Lake Erie [2.9 MB PDF] - Ohio Geological Survey
geosurvey.ohiodnr.gov
(Geologists), Dale Liebenthal {Research. Vessel Captain and Operations Officer}, and Mary Lou McGurk (Secretary) give outstanding service to our citizens who.
Ohio Geology Newsletter, Spring Ohio Geological ...
geosurvey.ohiodnr.gov
Mary Lou McGurk is the secretary for the Lake Erie Section in Sandusky and has been with the Survey since In addition to typing, filing, and other such ...
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