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Google Analytics Dashboard for Digital engineering aspects of karst map:  A GIS version of Davies, W.E., Simpson, J.H., Ohlmacher, G.C., Kirk, W.S., and Newton, E.G., 1984, Engineering aspects of karst:  U.S. Geological Survey, National atlas of the United States of America, scale 1:7,500,000

Digital engineering aspects of karst map:  A GIS version of Davies, W.E., Simpson, J.H., Ohlmacher, G.C., Kirk, W.S., and Newton, E.G., 1984, Engineering aspects of karst:  U.S. Geological Survey, National atlas of the United States of America, scale 1:7,500,000

URI: https://pubs.usgs.gov/publication/ofr20041352

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