1976. 2011-03-25T18:45:54Z. 2011-04-04T14:39:50Z. Knight, Alfred L. Geological Survey of Alabama. English. Public. Alabama and Jefferson County.
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1976. 2011-03-25T18:48:03Z. 2011-04-04T14:39:47Z. Knight, Alfred L. Geological Survey of Alabama. English. Public. Alabama and Jefferson County.