1977. Duffield, Susan L. Base map by U.S. Geological Survey. Scale approximately 1:500,000 compiled by Susan L. Duffield ; cartographer, R. Anne Berry. Ohio. Division of Geological Survey.
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Start Over You searched for: Author Duffield, Susan L. Remove constraint Author: Duffield, Susan L. Year 1977 Remove constraint Year: 1977 Bounding Box -40.000931 39.999015 -39.999064 40.000987 Remove constraint Bounding Box: -40.000931 39.999015 -39.999064 40.000987