@misc{indiciaeb16fe7d1dd46, title = {U.S. Geological Survey World Wide Web Information}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {2001}, doi = {10.3133/fs03301}, url = {https://pubs.usgs.gov/publication/fs03301}, note = {Source identifier: fs03301} }