Hull, Dennis N. 1948-Dennis N. Hull, chief compiler.TIFFhttps://hdl.handle.net/1811/4816a215-bc8a-4d43-8cbb-527ef16366d9engOhio. Division of Geological SurveyPublicGeologyGeology, StratigraphicGeneralized column of bedrock units in OhioMapsOhioThe Ohio State University