@misc{indiciae563e5d41319e, title = {U.S. Geological Survey World Wide Web Information}, author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey}, year = {2003}, doi = {10.3133/fs05503}, url = {https://pubs.usgs.gov/publication/fs05503}, note = {Source identifier: fs05503} }