TY  - RPRT
TI  - 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
AU  - Bret D. Tobin
AU  - David J. Weary
PY  - 2004
DO  - 10.3133/ofr20041352
UR  - https://pubs.usgs.gov/publication/ofr20041352
ID  - ofr20041352
ER  -