A Sample Collection for the sub-community http://hdl.handle.net/1811/461 Wed, 22 May 2013 16:09:50 GMT 2013-05-22T16:09:50Z Report of the Geological Survey of Ohio[electronic resource] http://hdl.handle.net/1811/5842 Report of the Geological Survey of Ohio[electronic resource] Geological Survey of Ohio Text made available in compliance with Section 108 of the Copyright Revision Act of 1976 Mon, 01 Jan 1906 00:00:00 GMT http://hdl.handle.net/1811/5842 1906-01-01T00:00:00Z Geological Survey of Ohio